90809883 has 16 divisors (see below), whose sum is σ = 136379040. Its totient is φ = 59709312.

The previous prime is 90809867. The next prime is 90809891. The reversal of 90809883 is 38890809.

It is not a de Polignac number, because 90809883 - 2⁴ = 90809867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90809813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21066 + ... + 25007.

It is an arithmetic number, because the mean of its divisors is an integer number (8523690).

Almost surely, 2^90809883 is an apocalyptic number.

90809883 is a deficient number, since it is larger than the sum of its proper divisors (45569157).

90809883 is a wasteful number, since it uses less digits than its factorization.

90809883 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46155 (or 46149 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 90809883 is about 9529.4219656808. The cubic root of 90809883 is about 449.4806898237.

The spelling of 90809883 in words is "ninety million, eight hundred nine thousand, eight hundred eighty-three".