90499955 has 16 divisors (see below), whose sum is σ = 133662144. Its totient is φ = 57283200.

The previous prime is 90499921. The next prime is 90499973. The reversal of 90499955 is 55999409.

It is not a de Polignac number, because 90499955 - 2⁸ = 90499699 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98996 + ... + 99905.

It is an arithmetic number, because the mean of its divisors is an integer number (8353884).

Almost surely, 2^90499955 is an apocalyptic number.

90499955 is a deficient number, since it is larger than the sum of its proper divisors (43162189).

90499955 is a wasteful number, since it uses less digits than its factorization.

90499955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198926.

The product of its (nonzero) digits is 656100, while the sum is 50.

The square root of 90499955 is about 9513.1464300724. The cubic root of 90499955 is about 448.9687579018.

The spelling of 90499955 in words is "ninety million, four hundred ninety-nine thousand, nine hundred fifty-five".