90975498 has 16 divisors (see below), whose sum is σ = 182241696. Its totient is φ = 30276720.

The previous prime is 90975491. The next prime is 90975527. The reversal of 90975498 is 89457909.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 90975498.

It is not an unprimeable number, because it can be changed into a prime (90975491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7933 + ... + 15648.

It is an arithmetic number, because the mean of its divisors is an integer number (11390106).

Almost surely, 2^90975498 is an apocalyptic number.

90975498 is an abundant number, since it is smaller than the sum of its proper divisors (91266198).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90975498 is a wasteful number, since it uses less digits than its factorization.

90975498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24229.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 90975498 is about 9538.1076739571. The cubic root of 90975498 is about 449.7537714674.

The spelling of 90975498 in words is "ninety million, nine hundred seventy-five thousand, four hundred ninety-eight".