7798679279 has 4 divisors (see below), whose sum is σ = 7905510576. Its totient is φ = 7691847984.

The previous prime is 7798679243. The next prime is 7798679281. The reversal of 7798679279 is 9729768977.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7798679279 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 (7798679179) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53415539 + ... + 53415684.

It is an arithmetic number, because the mean of its divisors is an integer number (1976377644).

Almost surely, 2^7798679279 is an apocalyptic number.

7798679279 is a deficient number, since it is larger than the sum of its proper divisors (106831297).

7798679279 is a wasteful number, since it uses less digits than its factorization.

7798679279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106831296.

The product of its digits is 168031584, while the sum is 71.

The square root of 7798679279 is about 88310.1312364555. The cubic root of 7798679279 is about 1983.0805428600.

The spelling of 7798679279 in words is "seven billion, seven hundred ninety-eight million, six hundred seventy-nine thousand, two hundred seventy-nine".