3139979 has 2 divisors, whose sum is σ = 3139980. Its totient is φ = 3139978.

The previous prime is 3139967. The next prime is 3139991. The reversal of 3139979 is 9799313.

It is a balanced prime because it is at equal distance from previous prime (3139967) and next prime (3139991).

It is a cyclic number.

It is not a de Polignac number, because 3139979 - 2⁸ = 3139723 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (3139909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1569989 + 1569990.

It is an arithmetic number, because the mean of its divisors is an integer number (1569990).

Almost surely, 2^3139979 is an apocalyptic number.

3139979 is a deficient number, since it is larger than the sum of its proper divisors (1).

3139979 is an equidigital number, since it uses as much as digits as its factorization.

3139979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45927, while the sum is 41.

The square root of 3139979 is about 1771.9985891642. The cubic root of 3139979 is about 146.4341086034.

The spelling of 3139979 in words is "three million, one hundred thirty-nine thousand, nine hundred seventy-nine".