393031834864 has 20 divisors (see below), whose sum is σ = 763398192960. Its totient is φ = 196025849600.

The previous prime is 393031834829. The next prime is 393031834961. The reversal of 393031834864 is 468438130393.

It is a super-4 number, since 4×393031834864⁴ (a number of 47 digits) contains 4444 as substring.

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 3 ways as a sum of consecutive naturals, for example, 30622624 + ... + 30635455.

It is an arithmetic number, because the mean of its divisors is an integer number (38169909648).

Almost surely, 2^393031834864 is an apocalyptic number.

It is an amenable number.

393031834864 is a deficient number, since it is larger than the sum of its proper divisors (370366358096).

393031834864 is a wasteful number, since it uses less digits than its factorization.

393031834864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61258488 (or 61258482 counting only the distinct ones).

The product of its (nonzero) digits is 4478976, while the sum is 52.

The spelling of 393031834864 in words is "three hundred ninety-three billion, thirty-one million, eight hundred thirty-four thousand, eight hundred sixty-four".