90264891 has 4 divisors (see below), whose sum is σ = 120353192. Its totient is φ = 60176592.

The previous prime is 90264887. The next prime is 90264893. The reversal of 90264891 is 19846209.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 90264891 - 2² = 90264887 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90264893) 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, 15044146 + ... + 15044151.

It is an arithmetic number, because the mean of its divisors is an integer number (30088298).

Almost surely, 2^90264891 is an apocalyptic number.

90264891 is a deficient number, since it is larger than the sum of its proper divisors (30088301).

90264891 is a wasteful number, since it uses less digits than its factorization.

90264891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30088300.

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 90264891 is about 9500.7837045162. The cubic root of 90264891 is about 448.5797046793.

The spelling of 90264891 in words is "ninety million, two hundred sixty-four thousand, eight hundred ninety-one".