3856393942 has 8 divisors (see below), whose sum is σ = 5794447176. Its totient is φ = 1924911552.

The previous prime is 3856393939. The next prime is 3856393943. The reversal of 3856393942 is 2493936583.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 3856393942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856393943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1641243 + ... + 1643590.

It is an arithmetic number, because the mean of its divisors is an integer number (724305897).

Almost surely, 2^3856393942 is an apocalyptic number.

3856393942 is a deficient number, since it is larger than the sum of its proper divisors (1938053234).

3856393942 is a wasteful number, since it uses less digits than its factorization.

3856393942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3285422.

The product of its digits is 4199040, while the sum is 52.

The square root of 3856393942 is about 62099.8707084000. The cubic root of 3856393942 is about 1568.1723688039.

The spelling of 3856393942 in words is "three billion, eight hundred fifty-six million, three hundred ninety-three thousand, nine hundred forty-two".