979530861 has 8 divisors (see below), whose sum is σ = 1306819360. Its totient is φ = 652631472.

The previous prime is 979530857. The next prime is 979530889. The reversal of 979530861 is 168035979.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 979530861 - 2² = 979530857 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 979530861.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979530661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91351 + ... + 101508.

It is an arithmetic number, because the mean of its divisors is an integer number (163352420).

Almost surely, 2^979530861 is an apocalyptic number.

It is an amenable number.

979530861 is a deficient number, since it is larger than the sum of its proper divisors (327288499).

979530861 is a wasteful number, since it uses less digits than its factorization.

979530861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194555.

The product of its (nonzero) digits is 408240, while the sum is 48.

The square root of 979530861 is about 31297.4577402063. The cubic root of 979530861 is about 993.1298629712.

The spelling of 979530861 in words is "nine hundred seventy-nine million, five hundred thirty thousand, eight hundred sixty-one".