3921295139 has 16 divisors (see below), whose sum is σ = 4155369984. Its totient is φ = 3692673600.

The previous prime is 3921295129. The next prime is 3921295141. The reversal of 3921295139 is 9315921293.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3921295139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3921295139.

It is not an unprimeable number, because it can be changed into a prime (3921295129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1584407 + ... + 1586879.

It is an arithmetic number, because the mean of its divisors is an integer number (259710624).

Almost surely, 2^3921295139 is an apocalyptic number.

3921295139 is a deficient number, since it is larger than the sum of its proper divisors (234074845).

3921295139 is a wasteful number, since it uses less digits than its factorization.

3921295139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3538.

The product of its digits is 131220, while the sum is 44.

The square root of 3921295139 is about 62620.2454402727. The cubic root of 3921295139 is about 1576.9206620188.

The spelling of 3921295139 in words is "three billion, nine hundred twenty-one million, two hundred ninety-five thousand, one hundred thirty-nine".