3979979 has 8 divisors (see below), whose sum is σ = 4113120. Its totient is φ = 3848256.

The previous prime is 3979967. The next prime is 3979981. The reversal of 3979979 is 9799793.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3979979 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 3979979.

It is not an unprimeable number, because it can be changed into a prime (3979999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9527 + ... + 9935.

It is an arithmetic number, because the mean of its divisors is an integer number (514140).

Almost surely, 2^3979979 is an apocalyptic number.

3979979 is a deficient number, since it is larger than the sum of its proper divisors (133141).

3979979 is a wasteful number, since it uses less digits than its factorization.

3979979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709.

The product of its digits is 964467, while the sum is 53.

The square root of 3979979 is about 1994.9884711446. The cubic root of 3979979 is about 158.4748174556.

The spelling of 3979979 in words is "three million, nine hundred seventy-nine thousand, nine hundred seventy-nine".