2579979 has 16 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 1627296.

The previous prime is 2579977. The next prime is 2579989. The reversal of 2579979 is 9799752.

It is not a de Polignac number, because 2579979 - 2¹ = 2579977 is a prime.

2579979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2579977) 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, 9457 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (226800).

2^2579979 is an apocalyptic number.

2579979 is a deficient number, since it is larger than the sum of its proper divisors (1048821).

2579979 is a wasteful number, since it uses less digits than its factorization.

2579979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 434.

The product of its digits is 357210, while the sum is 48.

The square root of 2579979 is about 1606.2313033931. The cubic root of 2579979 is about 137.1530248848.

It can be divided in two parts, 25799 and 79, that added together give a triangular number (25878 = T₂₂₇).

The spelling of 2579979 in words is "two million, five hundred seventy-nine thousand, nine hundred seventy-nine".