90996491 has 8 divisors (see below), whose sum is σ = 95884800. Its totient is φ = 86118120.

The previous prime is 90996481. The next prime is 90996497. The reversal of 90996491 is 19469909.

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

It is a cyclic number.

It is not a de Polignac number, because 90996491 - 2¹⁰ = 90995467 is a prime.

It is a super-2 number, since 2×90996491² = 16560722748626162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90996497) 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, 23246 + ... + 26876.

It is an arithmetic number, because the mean of its divisors is an integer number (11985600).

Almost surely, 2^90996491 is an apocalyptic number.

90996491 is a deficient number, since it is larger than the sum of its proper divisors (4888309).

90996491 is a wasteful number, since it uses less digits than its factorization.

90996491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4969.

The product of its (nonzero) digits is 157464, while the sum is 47.

The square root of 90996491 is about 9539.2080908218. The cubic root of 90996491 is about 449.7883630333.

The spelling of 90996491 in words is "ninety million, nine hundred ninety-six thousand, four hundred ninety-one".