2259979 has 4 divisors (see below), whose sum is σ = 2264976. Its totient is φ = 2254984.

The previous prime is 2259967. The next prime is 2260009. The reversal of 2259979 is 9799522.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2259979 is a prime.

It is a Duffinian number.

2259979 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2259919) 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, 1744 + ... + 2749.

It is an arithmetic number, because the mean of its divisors is an integer number (566244).

2^2259979 is an apocalyptic number.

2259979 is a deficient number, since it is larger than the sum of its proper divisors (4997).

2259979 is an equidigital number, since it uses as much as digits as its factorization.

2259979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4996.

The product of its digits is 102060, while the sum is 43.

The square root of 2259979 is about 1503.3226533250. The cubic root of 2259979 is about 131.2305053434.

The spelling of 2259979 in words is "two million, two hundred fifty-nine thousand, nine hundred seventy-nine".