779796399 has 8 divisors (see below), whose sum is σ = 1075581360. Its totient is φ = 501937856.

The previous prime is 779796397. The next prime is 779796421. The reversal of 779796399 is 993697977.

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 779796399 - 2¹ = 779796397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779796397) 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, 4481502 + ... + 4481675.

It is an arithmetic number, because the mean of its divisors is an integer number (134447670).

Almost surely, 2^779796399 is an apocalyptic number.

779796399 is a deficient number, since it is larger than the sum of its proper divisors (295784961).

779796399 is a wasteful number, since it uses less digits than its factorization.

779796399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8963209.

The product of its digits is 40507614, while the sum is 66.

The square root of 779796399 is about 27924.8348070315. The cubic root of 779796399 is about 920.4363080932.

It can be divided in two parts, 7797 and 96399, that added together give a triangular number (104196 = T₄₅₆).

The spelling of 779796399 in words is "seven hundred seventy-nine million, seven hundred ninety-six thousand, three hundred ninety-nine".