2489579 has 4 divisors (see below), whose sum is σ = 2569920. Its totient is φ = 2409240.

The previous prime is 2489573. The next prime is 2489603. The reversal of 2489579 is 9759842.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9759842 = 2 ⋅4879921.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2489579 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2489573) 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, 40124 + ... + 40185.

It is an arithmetic number, because the mean of its divisors is an integer number (642480).

2^2489579 is an apocalyptic number.

2489579 is a deficient number, since it is larger than the sum of its proper divisors (80341).

2489579 is an equidigital number, since it uses as much as digits as its factorization.

2489579 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80340.

The product of its digits is 181440, while the sum is 44.

The square root of 2489579 is about 1577.8399792121. The cubic root of 2489579 is about 135.5320385563.

The spelling of 2489579 in words is "two million, four hundred eighty-nine thousand, five hundred seventy-nine".