# Number 90

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## Description of the number 90

90 is a natural number (hence integer, rational and real) of 2 digits that follows 89 and precedes 91.

90 is an even number, since it is divisible by 2.

The number 90 is a unique number, with its own characteristics that, for some reason, has caught your attention. It is logical, we use numbers every day, in multiple ways and almost without realizing it, but knowing more about the number 90 can help you benefit from that knowledge, and be of great use. If you keep reading, we will give you all the facts you need to know about the number 90, you will see how many of them you already knew, but we are sure you will also discover some new ones.

## how to write 90 in letters?

Number 90 in English is written as ninety
The number 90 is pronounced digit by digit as (9) nine (0) zero.

## What are the divisors of 90?

The number 90 has 12 divisors, they are as follows:

The sum of its divisors, excluding the number itself is 144, so it is an abundant number and its abundance is 54

## Is 90 a prime number?

No, 90 is not a prime number since it has more divisors than 1 and the number itself

## What are the prime factors of 90?

The factorization into prime factors of 90 is:

21*32*51

## What is the square root of 90?

The square root of 90 is. 9.4868329805051

## What is the square of 90?

The square of 90, the result of multiplying 90*90 is. 8100

## How to convert 90 to binary numbers?

The decimal number 90 into binary numbers is.1011010

## How to convert 90 to octal?

The decimal number 90 in octal numbers is132

## How to convert 90 to hexadecimal?

The decimal number 90 in hexadecimal numbers is5a

## What is the natural or neperian logarithm of 90?

The neperian or natural logarithm of 90 is.4.4998096703303

## What is the base 10 logarithm of 90?

The base 10 logarithm of 90 is1.9542425094393

## What are the trigonometric properties of 90?

### What is the sine of 90?

The sine of 90 radians is.0.89399666360056

### What is the cosine of 90?

The cosine of 90 radians is. -0.44807361612917

### What is the tangent of 90?

The tangent of 90 radians is.-1.9952004122082