90939284 has 12 divisors (see below), whose sum is σ = 159969684. Its totient is φ = 45233664.

The previous prime is 90939269. The next prime is 90939293. The reversal of 90939284 is 48293909.

It can be written as a sum of positive squares in 2 ways, for example, as 47748100 + 43191184 = 6910^2 + 6572^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58127 + ... + 59670.

It is an arithmetic number, because the mean of its divisors is an integer number (13330807).

Almost surely, 2^90939284 is an apocalyptic number.

It is an amenable number.

90939284 is a deficient number, since it is larger than the sum of its proper divisors (69030400).

90939284 is a wasteful number, since it uses less digits than its factorization.

90939284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117994 (or 117992 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 90939284 is about 9536.2091000565. The cubic root of 90939284 is about 449.6940867353.

The spelling of 90939284 in words is "ninety million, nine hundred thirty-nine thousand, two hundred eighty-four".