779005998 has 48 divisors (see below), whose sum is σ = 1826487936. Its totient is φ = 248375160.

The previous prime is 779005993. The next prime is 779005999. The reversal of 779005998 is 899500977.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779005993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23668 + ... + 46023.

It is an arithmetic number, because the mean of its divisors is an integer number (38051832).

Almost surely, 2^779005998 is an apocalyptic number.

779005998 is an abundant number, since it is smaller than the sum of its proper divisors (1047481938).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

779005998 is a wasteful number, since it uses less digits than its factorization.

779005998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69731 (or 69719 counting only the distinct ones).

The product of its (nonzero) digits is 1428840, while the sum is 54.

The square root of 779005998 is about 27910.6789240248. The cubic root of 779005998 is about 920.1252184634.

The spelling of 779005998 in words is "seven hundred seventy-nine million, five thousand, nine hundred ninety-eight".