99999604 has 24 divisors (see below), whose sum is σ = 180770408. Its totient is φ = 48366720.

The previous prime is 99999589. The next prime is 99999611. The reversal of 99999604 is 40699999.

It can be written as a sum of positive squares in 4 ways, for example, as 8988004 + 91011600 = 2998^2 + 9540^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24922 + ... + 28654.

Almost surely, 2^99999604 is an apocalyptic number.

It is an amenable number.

99999604 is a deficient number, since it is larger than the sum of its proper divisors (80770804).

99999604 is a wasteful number, since it uses less digits than its factorization.

99999604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3955 (or 3953 counting only the distinct ones).

The product of its (nonzero) digits is 1417176, while the sum is 55.

The square root of 99999604 is about 9999.9801999804. The cubic root of 99999604 is about 464.1582706707.

The spelling of 99999604 in words is "ninety-nine million, nine hundred ninety-nine thousand, six hundred four".