90293864 has 8 divisors (see below), whose sum is σ = 169301010. Its totient is φ = 45146928.

The previous prime is 90293857. The next prime is 90293867. The reversal of 90293864 is 46839209.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 76912900 + 13380964 = 8770^2 + 3658^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (90293867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5643359 + ... + 5643374.

Almost surely, 2^90293864 is an apocalyptic number.

It is an amenable number.

90293864 is a deficient number, since it is larger than the sum of its proper divisors (79007146).

90293864 is a wasteful number, since it uses less digits than its factorization.

90293864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11286739 (or 11286735 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 41.

The square root of 90293864 is about 9502.3083511324. The cubic root of 90293864 is about 448.6276942108.

The spelling of 90293864 in words is "ninety million, two hundred ninety-three thousand, eight hundred sixty-four".