7979669797 has 8 divisors (see below), whose sum is σ = 9217158912. Its totient is φ = 6827524800.

The previous prime is 7979669767. The next prime is 7979669851.

7979669797 is nontrivially palindromic in base 10.

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-7979669797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7979669707) 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, 21335829 + ... + 21336202.

It is an arithmetic number, because the mean of its divisors is an integer number (1152144864).

Almost surely, 2^7979669797 is an apocalyptic number.

It is an amenable number.

7979669797 is a deficient number, since it is larger than the sum of its proper divisors (1237489115).

7979669797 is a wasteful number, since it uses less digits than its factorization.

7979669797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42672059.

The product of its digits is 567106596, while the sum is 76.

The square root of 7979669797 is about 89328.9975148048. The cubic root of 7979669797 is about 1998.3043792581.

It can be divided in two parts, 7979 and 669797, that added together give a palindrome (677776).

The spelling of 7979669797 in words is "seven billion, nine hundred seventy-nine million, six hundred sixty-nine thousand, seven hundred ninety-seven".