3942942938 has 16 divisors (see below), whose sum is σ = 6512392224. Its totient is φ = 1775495760.

The previous prime is 3942942929. The next prime is 3942942943. The reversal of 3942942938 is 8392492493.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3942942938.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 835145 + ... + 839852.

It is an arithmetic number, because the mean of its divisors is an integer number (407024514).

Almost surely, 2^3942942938 is an apocalyptic number.

3942942938 is a deficient number, since it is larger than the sum of its proper divisors (2569449286).

3942942938 is a wasteful number, since it uses less digits than its factorization.

3942942938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1675117.

The product of its digits is 3359232, while the sum is 53.

The square root of 3942942938 is about 62792.8573804378. The cubic root of 3942942938 is about 1579.8171740066.

The spelling of 3942942938 in words is "three billion, nine hundred forty-two million, nine hundred forty-two thousand, nine hundred thirty-eight".