90988938 has 24 divisors (see below), whose sum is σ = 197479776. Its totient is φ = 30277800.

The previous prime is 90988867. The next prime is 90988939. The reversal of 90988938 is 83988909.

It is a super-3 number, since 3×90988938³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (90988939) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7353 + ... + 15363.

It is an arithmetic number, because the mean of its divisors is an integer number (8228324).

Almost surely, 2^90988938 is an apocalyptic number.

90988938 is an abundant number, since it is smaller than the sum of its proper divisors (106490838).

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

90988938 is a wasteful number, since it uses less digits than its factorization.

90988938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8650 (or 8647 counting only the distinct ones).

The product of its (nonzero) digits is 1119744, while the sum is 54.

The square root of 90988938 is about 9538.8121902048. The cubic root of 90988938 is about 449.7759180643.

The spelling of 90988938 in words is "ninety million, nine hundred eighty-eight thousand, nine hundred thirty-eight".