90989275 has 12 divisors (see below), whose sum is σ = 121506112. Its totient is φ = 67191840.

The previous prime is 90989267. The next prime is 90989279. The reversal of 90989275 is 57298909.

It is not a de Polignac number, because 90989275 - 2³ = 90989267 is a prime.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (90989279) 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, 139659 + ... + 140308.

Almost surely, 2^90989275 is an apocalyptic number.

90989275 is a deficient number, since it is larger than the sum of its proper divisors (30516837).

90989275 is a wasteful number, since it uses less digits than its factorization.

90989275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279990 (or 279985 counting only the distinct ones).

The product of its (nonzero) digits is 408240, while the sum is 49.

The square root of 90989275 is about 9538.8298548617. The cubic root of 90989275 is about 449.7764733490.

The spelling of 90989275 in words is "ninety million, nine hundred eighty-nine thousand, two hundred seventy-five".