90997384 has 32 divisors (see below), whose sum is σ = 187416000. Its totient is φ = 41228352.

The previous prime is 90997381. The next prime is 90997391. The reversal of 90997384 is 48379909.

It is not an unprimeable number, because it can be changed into a prime (90997381) 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, 9519 + ... + 16510.

It is an arithmetic number, because the mean of its divisors is an integer number (5856750).

Almost surely, 2^90997384 is an apocalyptic number.

It is an amenable number.

90997384 is an abundant number, since it is smaller than the sum of its proper divisors (96418616).

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

90997384 is a wasteful number, since it uses less digits than its factorization.

90997384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26077 (or 26073 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 90997384 is about 9539.2548975274. The cubic root of 90997384 is about 449.7898343709.

The spelling of 90997384 in words is "ninety million, nine hundred ninety-seven thousand, three hundred eighty-four".