779478983 has 4 divisors (see below), whose sum is σ = 779539968. Its totient is φ = 779418000.

The previous prime is 779478977. The next prime is 779478991. The reversal of 779478983 is 389874977.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 779478983 - 2¹⁴ = 779462599 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 (779478083) 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, 3143 + ... + 39608.

It is an arithmetic number, because the mean of its divisors is an integer number (194884992).

Almost surely, 2^779478983 is an apocalyptic number.

779478983 is a deficient number, since it is larger than the sum of its proper divisors (60985).

779478983 is a wasteful number, since it uses less digits than its factorization.

779478983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60984.

The product of its digits is 21337344, while the sum is 62.

The square root of 779478983 is about 27919.1508287770. The cubic root of 779478983 is about 920.3114033266.

The spelling of 779478983 in words is "seven hundred seventy-nine million, four hundred seventy-eight thousand, nine hundred eighty-three".