7979739 has 8 divisors (see below), whose sum is σ = 10739520. Its totient is φ = 5269896.

The previous prime is 7979737. The next prime is 7979771. The reversal of 7979739 is 9379797.

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

It is not a de Polignac number, because 7979739 - 2¹ = 7979737 is a prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 7979691 and 7979700.

It is not an unprimeable number, because it can be changed into a prime (7979737) 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, 12109 + ... + 12750.

It is an arithmetic number, because the mean of its divisors is an integer number (1342440).

Almost surely, 2^7979739 is an apocalyptic number.

7979739 is a deficient number, since it is larger than the sum of its proper divisors (2759781).

7979739 is a wasteful number, since it uses less digits than its factorization.

7979739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24969.

The product of its digits is 750141, while the sum is 51.

The square root of 7979739 is about 2824.8431814881. The cubic root of 7979739 is about 199.8310155949.

The spelling of 7979739 in words is "seven million, nine hundred seventy-nine thousand, seven hundred thirty-nine".