90196857 has 24 divisors (see below), whose sum is σ = 139405760. Its totient is φ = 56026080.

The previous prime is 90196817. The next prime is 90196859. The reversal of 90196857 is 75869109.

It is not a de Polignac number, because 90196857 - 2⁶ = 90196793 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90196859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6108 + ... + 14754.

Almost surely, 2^90196857 is an apocalyptic number.

It is an amenable number.

90196857 is a deficient number, since it is larger than the sum of its proper divisors (49208903).

90196857 is a wasteful number, since it uses less digits than its factorization.

90196857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733 (or 8730 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 90196857 is about 9497.2025881309. The cubic root of 90196857 is about 448.4669759393.

It can be divided in two parts, 9019 and 6857, that added together give a square (15876 = 126²).

The spelling of 90196857 in words is "ninety million, one hundred ninety-six thousand, eight hundred fifty-seven".