3939291929394 has 48 divisors (see below), whose sum is σ = 8739490885632. Its totient is φ = 1281803457024.

The previous prime is 3939291929389. The next prime is 3939291929449. The reversal of 3939291929394 is 4939291929393.

3939291929394 is a `hidden beast` number, since 39 + 39 + 2 + 91 + 92 + 9 + 394 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5754799 + ... + 6402834.

It is an arithmetic number, because the mean of its divisors is an integer number (182072726784).

Almost surely, 2^{3939291929394} is an apocalyptic number.

3939291929394 is an abundant number, since it is smaller than the sum of its proper divisors (4800198956238).

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

3939291929394 is a wasteful number, since it uses less digits than its factorization.

3939291929394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12158071 (or 12158068 counting only the distinct ones).

The product of its digits is 229582512, while the sum is 72.

Subtracting 3939291929394 from its reverse (4939291929393), we obtain a palindrome (999999999999).

The spelling of 3939291929394 in words is "three trillion, nine hundred thirty-nine billion, two hundred ninety-one million, nine hundred twenty-nine thousand, three hundred ninety-four".