90909089976 has 32 divisors (see below), whose sum is σ = 240641709840. Its totient is φ = 28520498688.

The previous prime is 90909089951. The next prime is 90909089977. The reversal of 90909089976 is 67998090909.

It is a super-3 number, since 3×90909089976³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90909089977) 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, 111407791 + ... + 111408606.

Almost surely, 2^90909089976 is an apocalyptic number.

It is an amenable number.

90909089976 is an abundant number, since it is smaller than the sum of its proper divisors (149732619864).

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

90909089976 is a wasteful number, since it uses less digits than its factorization.

90909089976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222816423 (or 222816419 counting only the distinct ones).

The product of its (nonzero) digits is 19840464, while the sum is 66.

The spelling of 90909089976 in words is "ninety billion, nine hundred nine million, eighty-nine thousand, nine hundred seventy-six".