979830691 has 8 divisors (see below), whose sum is σ = 1123409664. Its totient is φ = 837152520.

The previous prime is 979830689. The next prime is 979830721. The reversal of 979830691 is 196038979.

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

It is a cyclic number.

It is not a de Polignac number, because 979830691 - 2¹ = 979830689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979830611) 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, 222865 + ... + 227218.

It is an arithmetic number, because the mean of its divisors is an integer number (140426208).

Almost surely, 2^979830691 is an apocalyptic number.

979830691 is a deficient number, since it is larger than the sum of its proper divisors (143578973).

979830691 is a wasteful number, since it uses less digits than its factorization.

979830691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 450401.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 979830691 is about 31302.2473793816. The cubic root of 979830691 is about 993.2311834985.

The spelling of 979830691 in words is "nine hundred seventy-nine million, eight hundred thirty thousand, six hundred ninety-one".