90917994 has 8 divisors (see below), whose sum is σ = 181836000. Its totient is φ = 30305996.

The previous prime is 90917993. The next prime is 90918013. The reversal of 90917994 is 49971909.

It is a sphenic number, since it is the product of 3 distinct primes.

90917994 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 7576494 + ... + 7576505.

It is an arithmetic number, because the mean of its divisors is an integer number (22729500).

Almost surely, 2^90917994 is an apocalyptic number.

90917994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

90917994 is a wasteful number, since it uses less digits than its factorization.

90917994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15153004.

The product of its (nonzero) digits is 183708, while the sum is 48.

The square root of 90917994 is about 9535.0927630517. The cubic root of 90917994 is about 449.6589910322.

The spelling of 90917994 in words is "ninety million, nine hundred seventeen thousand, nine hundred ninety-four".