279797679689 has 8 divisors (see below), whose sum is σ = 305485482432. Its totient is φ = 254151818640.

The previous prime is 279797679683. The next prime is 279797679719. The reversal of 279797679689 is 986976797972.

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 279797679689 - 2¹² = 279797675593 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 279797679689.

It is not an unprimeable number, because it can be changed into a prime (279797679683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10471469 + ... + 10498154.

It is an arithmetic number, because the mean of its divisors is an integer number (38185685304).

Almost surely, 2^279797679689 is an apocalyptic number.

It is an amenable number.

279797679689 is a deficient number, since it is larger than the sum of its proper divisors (25687802743).

279797679689 is a wasteful number, since it uses less digits than its factorization.

279797679689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20970847.

The product of its digits is 9073705536, while the sum is 86.

The spelling of 279797679689 in words is "two hundred seventy-nine billion, seven hundred ninety-seven million, six hundred seventy-nine thousand, six hundred eighty-nine".