779959 has 4 divisors (see below), whose sum is σ = 781816. Its totient is φ = 778104.

The previous prime is 779939. The next prime is 779971. The reversal of 779959 is 959977.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 779959 - 2⁵ = 779927 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 (779939) 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, 37 + ... + 1249.

It is an arithmetic number, because the mean of its divisors is an integer number (195454).

2⁷⁷⁹⁹⁵⁹ is an apocalyptic number.

779959 is a deficient number, since it is larger than the sum of its proper divisors (1857).

779959 is a wasteful number, since it uses less digits than its factorization.

779959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1856.

The product of its digits is 178605, while the sum is 46.

The square root of 779959 is about 883.1528746486. The cubic root of 779959 is about 92.0500279263.

The spelling of 779959 in words is "seven hundred seventy-nine thousand, nine hundred fifty-nine".