979595989 has 4 divisors (see below), whose sum is σ = 979658656. Its totient is φ = 979533324.

The previous prime is 979595987. The next prime is 979595993. The reversal of 979595989 is 989595979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, 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 979595989 - 2¹ = 979595987 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 (979595987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13462 + ... + 46264.

It is an arithmetic number, because the mean of its divisors is an integer number (244914664).

Almost surely, 2^979595989 is an apocalyptic number.

It is an amenable number.

979595989 is a deficient number, since it is larger than the sum of its proper divisors (62667).

979595989 is a wasteful number, since it uses less digits than its factorization.

979595989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62666.

The product of its digits is 82668600, while the sum is 70.

The square root of 979595989 is about 31298.4981908078. The cubic root of 979595989 is about 993.1518732113.

The spelling of 979595989 in words is "nine hundred seventy-nine million, five hundred ninety-five thousand, nine hundred eighty-nine".