90497023990 has 16 divisors (see below), whose sum is σ = 162904851648. Its totient is φ = 36196541056.

The previous prime is 90497023937. The next prime is 90497023999. The reversal of 90497023990 is 9932079409.

It is a super-2 number, since 2×90497023990² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90497023999) 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, 111022 + ... + 439681.

It is an arithmetic number, because the mean of its divisors is an integer number (10181553228).

Almost surely, 2^90497023990 is an apocalyptic number.

90497023990 is a deficient number, since it is larger than the sum of its proper divisors (72407827658).

90497023990 is a wasteful number, since it uses less digits than its factorization.

90497023990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 567143.

The product of its (nonzero) digits is 1102248, while the sum is 52.

The spelling of 90497023990 in words is "ninety billion, four hundred ninety-seven million, twenty-three thousand, nine hundred ninety".