394656384 has 32 divisors (see below), whose sum is σ = 1048307040. Its totient is φ = 131552000.

The previous prime is 394656373. The next prime is 394656401. The reversal of 394656384 is 483656493.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×394656384² = 311507322863910912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 513492 + ... + 514259.

It is an arithmetic number, because the mean of its divisors is an integer number (32759595).

Almost surely, 2^394656384 is an apocalyptic number.

It is an amenable number.

394656384 is an abundant number, since it is smaller than the sum of its proper divisors (653650656).

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

394656384 is a wasteful number, since it uses less digits than its factorization.

394656384 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027768 (or 1027756 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 48.

The square root of 394656384 is about 19865.9604348745. The cubic root of 394656384 is about 733.5105716688.

The spelling of 394656384 in words is "three hundred ninety-four million, six hundred fifty-six thousand, three hundred eighty-four".