2559979 has 4 divisors (see below), whose sum is σ = 2710584. Its totient is φ = 2409376.

The previous prime is 2559959. The next prime is 2559983. The reversal of 2559979 is 9799552.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 2559979 - 2¹¹ = 2557931 is a prime.

It is a Duffinian number.

2559979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2559959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75277 + ... + 75310.

It is an arithmetic number, because the mean of its divisors is an integer number (677646).

2^2559979 is an apocalyptic number.

2559979 is a deficient number, since it is larger than the sum of its proper divisors (150605).

2559979 is a wasteful number, since it uses less digits than its factorization.

2559979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150604.

The product of its digits is 255150, while the sum is 46.

The square root of 2559979 is about 1599.9934374865. The cubic root of 2559979 is about 136.7977016759.

The spelling of 2559979 in words is "two million, five hundred fifty-nine thousand, nine hundred seventy-nine".