827490979 has 24 divisors (see below), whose sum is σ = 980348928. Its totient is φ = 696321360.

The previous prime is 827490973. The next prime is 827490991. The reversal of 827490979 is 979094728.

It is not a de Polignac number, because 827490979 - 2⁹ = 827490467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (827490973) 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, 640324 + ... + 641614.

It is an arithmetic number, because the mean of its divisors is an integer number (40847872).

Almost surely, 2^827490979 is an apocalyptic number.

827490979 is a deficient number, since it is larger than the sum of its proper divisors (152857949).

827490979 is a wasteful number, since it uses less digits than its factorization.

827490979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535 (or 1528 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 55.

The square root of 827490979 is about 28766.1429287974. The cubic root of 827490979 is about 938.8317231246.

The spelling of 827490979 in words is "eight hundred twenty-seven million, four hundred ninety thousand, nine hundred seventy-nine".