3967979 has 8 divisors (see below), whose sum is σ = 4221840. Its totient is φ = 3718656.

The previous prime is 3967973. The next prime is 3967993. The reversal of 3967979 is 9797693.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 3967979 - 2⁴ = 3967963 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3967973) 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, 767 + ... + 2919.

It is an arithmetic number, because the mean of its divisors is an integer number (527730).

Almost surely, 2^3967979 is an apocalyptic number.

3967979 is a deficient number, since it is larger than the sum of its proper divisors (253861).

3967979 is a wasteful number, since it uses less digits than its factorization.

3967979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2269.

The product of its digits is 642978, while the sum is 50.

The square root of 3967979 is about 1991.9786645444. The cubic root of 3967979 is about 158.3153851000.

The spelling of 3967979 in words is "three million, nine hundred sixty-seven thousand, nine hundred seventy-nine".