578979421 has 12 divisors (see below), whose sum is σ = 615983220. Its totient is φ = 544087040.

The previous prime is 578979413. The next prime is 578979433. The reversal of 578979421 is 124979875.

It can be written as a sum of positive squares in 6 ways, for example, as 29311396 + 549668025 = 5414^2 + 23445^2 .

It is not a de Polignac number, because 578979421 - 2³ = 578979413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (578919421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 270885 + ... + 273013.

It is an arithmetic number, because the mean of its divisors is an integer number (51331935).

Almost surely, 2^578979421 is an apocalyptic number.

It is an amenable number.

578979421 is a deficient number, since it is larger than the sum of its proper divisors (37003799).

578979421 is a wasteful number, since it uses less digits than its factorization.

578979421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3104 (or 3087 counting only the distinct ones).

The product of its digits is 1270080, while the sum is 52.

The square root of 578979421 is about 24061.9912102054. The cubic root of 578979421 is about 833.4656566231.

The spelling of 578979421 in words is "five hundred seventy-eight million, nine hundred seventy-nine thousand, four hundred twenty-one".