979619091 has 16 divisors (see below), whose sum is σ = 1432070400. Its totient is φ = 590721120.

The previous prime is 979619071. The next prime is 979619093. The reversal of 979619091 is 190916979.

It is not a de Polignac number, because 979619091 - 2⁷ = 979618963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (979619093) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68020 + ... + 81153.

It is an arithmetic number, because the mean of its divisors is an integer number (89504400).

Almost surely, 2^979619091 is an apocalyptic number.

979619091 is a deficient number, since it is larger than the sum of its proper divisors (452451309).

979619091 is a wasteful number, since it uses less digits than its factorization.

979619091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149386.

The product of its (nonzero) digits is 275562, while the sum is 51.

The square root of 979619091 is about 31298.8672478734. The cubic root of 979619091 is about 993.1596803803.

The spelling of 979619091 in words is "nine hundred seventy-nine million, six hundred nineteen thousand, ninety-one".