393039299872 has 24 divisors (see below), whose sum is σ = 819313541676. Its totient is φ = 184959670272.

The previous prime is 393039299857. The next prime is 393039299911. The reversal of 393039299872 is 278992930393.

It can be written as a sum of positive squares in 2 ways, for example, as 313201406736 + 79837893136 = 559644^2 + 282556^2 .

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 3 ways as a sum of consecutive naturals, for example, 361248813 + ... + 361249900.

Almost surely, 2^393039299872 is an apocalyptic number.

393039299872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

393039299872 is an abundant number, since it is smaller than the sum of its proper divisors (426274241804).

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

393039299872 is a wasteful number, since it uses less digits than its factorization.

393039299872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 722498740 (or 722498732 counting only the distinct ones).

The product of its (nonzero) digits is 39680928, while the sum is 64.

The spelling of 393039299872 in words is "three hundred ninety-three billion, thirty-nine million, two hundred ninety-nine thousand, eight hundred seventy-two".