979636439 has 4 divisors (see below), whose sum is σ = 990643680. Its totient is φ = 968629200.

The previous prime is 979636423. The next prime is 979636451. The reversal of 979636439 is 934636979.

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 979636439 - 2⁴ = 979636423 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 (979636939) 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, 5503487 + ... + 5503664.

It is an arithmetic number, because the mean of its divisors is an integer number (247660920).

Almost surely, 2^979636439 is an apocalyptic number.

979636439 is a deficient number, since it is larger than the sum of its proper divisors (11007241).

979636439 is a wasteful number, since it uses less digits than its factorization.

979636439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11007240.

The product of its digits is 6613488, while the sum is 56.

The square root of 979636439 is about 31299.1443812766. The cubic root of 979636439 is about 993.1655429421.

The spelling of 979636439 in words is "nine hundred seventy-nine million, six hundred thirty-six thousand, four hundred thirty-nine".