90891466 has 16 divisors (see below), whose sum is σ = 137629800. Its totient is φ = 45017280.

The previous prime is 90891457. The next prime is 90891509. The reversal of 90891466 is 66419809.

It can be written as a sum of positive squares in 4 ways, for example, as 87030241 + 3861225 = 9329^2 + 1965^2 .

It is a super-2 number, since 2×90891466² = 16522517183258312, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 137176 + ... + 137836.

Almost surely, 2^90891466 is an apocalyptic number.

90891466 is a deficient number, since it is larger than the sum of its proper divisors (46738334).

90891466 is a wasteful number, since it uses less digits than its factorization.

90891466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 90891466 is about 9533.7015896240. The cubic root of 90891466 is about 449.6152530307.

The spelling of 90891466 in words is "ninety million, eight hundred ninety-one thousand, four hundred sixty-six".