779948997 has 16 divisors (see below), whose sum is σ = 1080008640. Its totient is φ = 500068352.

The previous prime is 779948963. The next prime is 779949043. The reversal of 779948997 is 799849977.

It is a cyclic number.

It is not a de Polignac number, because 779948997 - 2¹² = 779944901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779948297) 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 15 ways as a sum of consecutive naturals, for example, 4918 + ... + 39800.

It is an arithmetic number, because the mean of its divisors is an integer number (67500540).

Almost surely, 2^779948997 is an apocalyptic number.

It is an amenable number.

779948997 is a deficient number, since it is larger than the sum of its proper divisors (300059643).

779948997 is a wasteful number, since it uses less digits than its factorization.

779948997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35172.

The product of its digits is 72013536, while the sum is 69.

The square root of 779948997 is about 27927.5669724378. The cubic root of 779948997 is about 920.4963440970.

The spelling of 779948997 in words is "seven hundred seventy-nine million, nine hundred forty-eight thousand, nine hundred ninety-seven".