90639094 has 48 divisors (see below), whose sum is σ = 174186720. Its totient is φ = 34594560.

The previous prime is 90639047. The next prime is 90639119. The reversal of 90639094 is 49093609.

It is a super-2 number, since 2×90639094² = 16430890722281672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67954 + ... + 69274.

It is an arithmetic number, because the mean of its divisors is an integer number (3628890).

Almost surely, 2^90639094 is an apocalyptic number.

90639094 is a deficient number, since it is larger than the sum of its proper divisors (83547626).

90639094 is a wasteful number, since it uses less digits than its factorization.

90639094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1385 (or 1372 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 90639094 is about 9520.4566066970. The cubic root of 90639094 is about 449.1987288338.

It can be divided in two parts, 906 and 39094, that added together give a square (40000 = 200²).

The spelling of 90639094 in words is "ninety million, six hundred thirty-nine thousand, ninety-four".