90693400 has 48 divisors (see below), whose sum is σ = 240989040. Its totient is φ = 31094400.

The previous prime is 90693391. The next prime is 90693433. The reversal of 90693400 is 439609.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30991 + ... + 33790.

It is an arithmetic number, because the mean of its divisors is an integer number (5020605).

Almost surely, 2^90693400 is an apocalyptic number.

It is an amenable number.

90693400 is an abundant number, since it is smaller than the sum of its proper divisors (150295640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90693400 is a wasteful number, since it uses less digits than its factorization.

90693400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64804 (or 64795 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 90693400 is about 9523.3082487127. The cubic root of 90693400 is about 449.2884227132.

The spelling of 90693400 in words is "ninety million, six hundred ninety-three thousand, four hundred".