3951139 has 2 divisors, whose sum is σ = 3951140. Its totient is φ = 3951138.

The previous prime is 3951133. The next prime is 3951151. The reversal of 3951139 is 9311593.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3951139 - 2³ = 3951131 is a prime.

It is a super-2 number, since 2×3951139² = 31222998794642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3951139.

It is not a weakly prime, because it can be changed into another prime (3951131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1975569 + 1975570.

It is an arithmetic number, because the mean of its divisors is an integer number (1975570).

Almost surely, 2^3951139 is an apocalyptic number.

3951139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3951139 is an equidigital number, since it uses as much as digits as its factorization.

3951139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3645, while the sum is 31.

The square root of 3951139 is about 1987.7472173292. The cubic root of 3951139 is about 158.0911053911.

The spelling of 3951139 in words is "three million, nine hundred fifty-one thousand, one hundred thirty-nine".