3979739 has 2 divisors, whose sum is σ = 3979740. Its totient is φ = 3979738.

The previous prime is 3979711. The next prime is 3979771. The reversal of 3979739 is 9379793.

It is a weak prime.

It is an emirp because it is prime and its reverse (9379793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3979739 - 2¹⁶ = 3914203 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 3979693 and 3979702.

It is not a weakly prime, because it can be changed into another prime (3979039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989869 + 1989870.

It is an arithmetic number, because the mean of its divisors is an integer number (1989870).

Almost surely, 2^3979739 is an apocalyptic number.

3979739 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979739 is an equidigital number, since it uses as much as digits as its factorization.

3979739 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 321489, while the sum is 47.

The square root of 3979739 is about 1994.9283195143. The cubic root of 3979739 is about 158.4716319513.

The spelling of 3979739 in words is "three million, nine hundred seventy-nine thousand, seven hundred thirty-nine".