90809504 has 24 divisors (see below), whose sum is σ = 180557748. Its totient is φ = 44953600.

The previous prime is 90809501. The next prime is 90809513. The reversal of 90809504 is 40590809.

It can be written as a sum of positive squares in 2 ways, for example, as 90250000 + 559504 = 9500^2 + 748^2 .

It is not an unprimeable number, because it can be changed into a prime (90809501) 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 3 ways as a sum of consecutive naturals, for example, 10817 + ... + 17280.

Almost surely, 2^90809504 is an apocalyptic number.

It is an amenable number.

90809504 is a deficient number, since it is larger than the sum of its proper divisors (89748244).

90809504 is a wasteful number, since it uses less digits than its factorization.

90809504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28208 (or 28200 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 90809504 is about 9529.4020798789. The cubic root of 90809504 is about 449.4800645121.

The spelling of 90809504 in words is "ninety million, eight hundred nine thousand, five hundred four".