779728797 has 12 divisors (see below), whose sum is σ = 1126634080. Its totient is φ = 519653448.

The previous prime is 779728769. The next prime is 779728801. The reversal of 779728797 is 797827977.

It is not a de Polignac number, because 779728797 - 2¹⁴ = 779712413 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 (779728717) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20454 + ... + 44472.

Almost surely, 2^779728797 is an apocalyptic number.

It is an amenable number.

779728797 is a deficient number, since it is larger than the sum of its proper divisors (346905283).

779728797 is a wasteful number, since it uses less digits than its factorization.

779728797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27632 (or 27629 counting only the distinct ones).

The product of its digits is 21781872, while the sum is 63.

The square root of 779728797 is about 27923.6243528665. The cubic root of 779728797 is about 920.4097092128.

The spelling of 779728797 in words is "seven hundred seventy-nine million, seven hundred twenty-eight thousand, seven hundred ninety-seven".