90508299 has 16 divisors (see below), whose sum is σ = 138091008. Its totient is φ = 51653952.

The previous prime is 90508291. The next prime is 90508337. The reversal of 90508299 is 99280509.

It is not a de Polignac number, because 90508299 - 2³ = 90508291 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90508299.

It is not an unprimeable number, because it can be changed into a prime (90508291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18079 + ... + 22535.

It is an arithmetic number, because the mean of its divisors is an integer number (8630688).

Almost surely, 2^90508299 is an apocalyptic number.

90508299 is a deficient number, since it is larger than the sum of its proper divisors (47582709).

90508299 is a wasteful number, since it uses less digits than its factorization.

90508299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5434.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 90508299 is about 9513.5849709770. The cubic root of 90508299 is about 448.9825556257.

The spelling of 90508299 in words is "ninety million, five hundred eight thousand, two hundred ninety-nine".