3942942939 has 24 divisors (see below), whose sum is σ = 6194212752. Its totient is φ = 2402395200.

The previous prime is 3942942929. The next prime is 3942942943. The reversal of 3942942939 is 9392492493.

It is not a de Polignac number, because 3942942939 - 2¹⁶ = 3942877403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3942942929) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 155017 + ... + 178650.

It is an arithmetic number, because the mean of its divisors is an integer number (258092198).

Almost surely, 2^3942942939 is an apocalyptic number.

3942942939 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

3942942939 is a deficient number, since it is larger than the sum of its proper divisors (2251269813).

3942942939 is a wasteful number, since it uses less digits than its factorization.

3942942939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333787 (or 333784 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 54.

The square root of 3942942939 is about 62792.8573884005. The cubic root of 3942942939 is about 1579.8171741401.

The spelling of 3942942939 in words is "three billion, nine hundred forty-two million, nine hundred forty-two thousand, nine hundred thirty-nine".