383939656 has 8 divisors (see below), whose sum is σ = 719886870. Its totient is φ = 191969824.

The previous prime is 383939653. The next prime is 383939659. The reversal of 383939656 is 656939383.

It is an interprime number because it is at equal distance from previous prime (383939653) and next prime (383939659).

It can be written as a sum of positive squares in only one way, i.e., 305900100 + 78039556 = 17490^2 + 8834^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (383939651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23996221 + ... + 23996236.

Almost surely, 2^383939656 is an apocalyptic number.

It is an amenable number.

383939656 is a deficient number, since it is larger than the sum of its proper divisors (335947214).

383939656 is a wasteful number, since it uses less digits than its factorization.

383939656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47992463 (or 47992459 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 52.

The square root of 383939656 is about 19594.3781733435. The cubic root of 383939656 is about 726.8101614143.

The spelling of 383939656 in words is "three hundred eighty-three million, nine hundred thirty-nine thousand, six hundred fifty-six".