90638373 has 32 divisors (see below), whose sum is σ = 146893824. Its totient is φ = 48529152.

The previous prime is 90638371. The next prime is 90638381. The reversal of 90638373 is 37383609.

It is not a de Polignac number, because 90638373 - 2¹ = 90638371 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90638371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109186 + ... + 110012.

It is an arithmetic number, because the mean of its divisors is an integer number (4590432).

Almost surely, 2^90638373 is an apocalyptic number.

It is an amenable number.

90638373 is a deficient number, since it is larger than the sum of its proper divisors (56255451).

90638373 is a wasteful number, since it uses less digits than its factorization.

90638373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1161.

The product of its (nonzero) digits is 81648, while the sum is 39.

The square root of 90638373 is about 9520.4187407908. The cubic root of 90638373 is about 449.1975377615.

The spelling of 90638373 in words is "ninety million, six hundred thirty-eight thousand, three hundred seventy-three".