90917996 has 48 divisors (see below), whose sum is σ = 178051104. Its totient is φ = 40352256.

The previous prime is 90917993. The next prime is 90918013. The reversal of 90917996 is 69971909.

It is not an unprimeable number, because it can be changed into a prime (90917993) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 162950 + ... + 163506.

It is an arithmetic number, because the mean of its divisors is an integer number (3709398).

Almost surely, 2^90917996 is an apocalyptic number.

It is an amenable number.

90917996 is a deficient number, since it is larger than the sum of its proper divisors (87133108).

90917996 is a wasteful number, since it uses less digits than its factorization.

90917996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 690 (or 688 counting only the distinct ones).

The product of its (nonzero) digits is 275562, while the sum is 50.

The square root of 90917996 is about 9535.0928679274. The cubic root of 90917996 is about 449.6589943294.

The spelling of 90917996 in words is "ninety million, nine hundred seventeen thousand, nine hundred ninety-six".