791818979 has 24 divisors (see below), whose sum is σ = 991329408. Its totient is φ = 628266240.

The previous prime is 791818933. The next prime is 791818997. The reversal of 791818979 is 979818197.

It is not a de Polignac number, because 791818979 - 2¹² = 791814883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791818919) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43022 + ... + 58604.

It is an arithmetic number, because the mean of its divisors is an integer number (41305392).

Almost surely, 2^791818979 is an apocalyptic number.

791818979 is a deficient number, since it is larger than the sum of its proper divisors (199510429).

791818979 is a wasteful number, since it uses less digits than its factorization.

791818979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15675 (or 15668 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 59.

The square root of 791818979 is about 28139.2782245743. The cubic root of 791818979 is about 925.1425069946.

The spelling of 791818979 in words is "seven hundred ninety-one million, eight hundred eighteen thousand, nine hundred seventy-nine".