999436079524 has 81 divisors (see below), whose sum is σ = 1855078538859. Its totient is φ = 471107110320.

The previous prime is 999436079503. The next prime is 999436079531. The reversal of 999436079524 is 425970634999.

The square root of 999436079524 is 999718.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 999436079524.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4736663779 + ... + 4736663989.

Almost surely, 2^999436079524 is an apocalyptic number.

999436079524 is the 999718-th square number.

It is an amenable number.

999436079524 is a deficient number, since it is larger than the sum of its proper divisors (855642459335).

999436079524 is a wasteful number, since it uses less digits than its factorization.

999436079524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678 (or 339 counting only the distinct ones).

The product of its (nonzero) digits is 132269760, while the sum is 67.

The spelling of 999436079524 in words is "nine hundred ninety-nine billion, four hundred thirty-six million, seventy-nine thousand, five hundred twenty-four".