7979942 has 16 divisors (see below), whose sum is σ = 12759552. Its totient is φ = 3734280.

The previous prime is 7979921. The next prime is 7979957. The reversal of 7979942 is 2499797.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 317 + ... + 4007.

It is an arithmetic number, because the mean of its divisors is an integer number (797472).

Almost surely, 2^7979942 is an apocalyptic number.

7979942 is a deficient number, since it is larger than the sum of its proper divisors (4779610).

7979942 is a wasteful number, since it uses less digits than its factorization.

7979942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3763.

The product of its digits is 285768, while the sum is 47.

The square root of 7979942 is about 2824.8791124577. The cubic root of 7979942 is about 199.8327101095.

The spelling of 7979942 in words is "seven million, nine hundred seventy-nine thousand, nine hundred forty-two".