90190389056 has 28 divisors (see below), whose sum is σ = 182779464768. Its totient is φ = 44135720832.

The previous prime is 90190389053. The next prime is 90190389097. The reversal of 90190389056 is 65098309109.

It is a super-2 number, since 2×90190389056² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 90190388995 and 90190389013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90190389053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14988746 + ... + 14994761.

Almost surely, 2^90190389056 is an apocalyptic number.

It is an amenable number.

90190389056 is an abundant number, since it is smaller than the sum of its proper divisors (92589075712).

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

90190389056 is a wasteful number, since it uses less digits than its factorization.

90190389056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29983566 (or 29983556 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 50.

The spelling of 90190389056 in words is "ninety billion, one hundred ninety million, three hundred eighty-nine thousand, fifty-six".