3979957 has 2 divisors, whose sum is σ = 3979958. Its totient is φ = 3979956.

The previous prime is 3979901. The next prime is 3979967. The reversal of 3979957 is 7599793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3964081 + 15876 = 1991^2 + 126^2 .

It is an emirp because it is prime and its reverse (7599793) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3979957 - 2¹⁵ = 3947189 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3979957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3979967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989978 + 1989979.

It is an arithmetic number, because the mean of its divisors is an integer number (1989979).

Almost surely, 2^3979957 is an apocalyptic number.

It is an amenable number.

3979957 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979957 is an equidigital number, since it uses as much as digits as its factorization.

3979957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 535815, while the sum is 49.

The square root of 3979957 is about 1994.9829573207. The cubic root of 3979957 is about 158.4745254564.

The spelling of 3979957 in words is "three million, nine hundred seventy-nine thousand, nine hundred fifty-seven".