90940497 has 12 divisors (see below), whose sum is σ = 128807376. Its totient is φ = 57060160.

The previous prime is 90940489. The next prime is 90940547. The reversal of 90940497 is 79404909.

It is not a de Polignac number, because 90940497 - 2³ = 90940489 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (90940427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51579 + ... + 53312.

It is an arithmetic number, because the mean of its divisors is an integer number (10733948).

Almost surely, 2^90940497 is an apocalyptic number.

It is an amenable number.

90940497 is a deficient number, since it is larger than the sum of its proper divisors (37866879).

90940497 is a wasteful number, since it uses less digits than its factorization.

90940497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104928 (or 104911 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 90940497 is about 9536.2726995404. The cubic root of 90940497 is about 449.6960861517.

The spelling of 90940497 in words is "ninety million, nine hundred forty thousand, four hundred ninety-seven".