779000999 has 4 divisors (see below), whose sum is σ = 890286864. Its totient is φ = 667715136.

The previous prime is 779000993. The next prime is 779001011. The reversal of 779000999 is 999000977.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999000977 = 13 ⋅76846229.

It is a cyclic number.

It is not a de Polignac number, because 779000999 - 2²⁸ = 510565543 is a prime.

It is a Duffinian number.

779000999 is a modest number, since divided by 999 gives 779 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779000993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55642922 + ... + 55642935.

It is an arithmetic number, because the mean of its divisors is an integer number (222571716).

Almost surely, 2^779000999 is an apocalyptic number.

779000999 is a deficient number, since it is larger than the sum of its proper divisors (111285865).

779000999 is a wasteful number, since it uses less digits than its factorization.

779000999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111285864.

The product of its (nonzero) digits is 321489, while the sum is 50.

The square root of 779000999 is about 27910.5893703447. The cubic root of 779000999 is about 920.1232502646.

The spelling of 779000999 in words is "seven hundred seventy-nine million, nine hundred ninety-nine", and thus it is an aban number.