2791879 has 4 divisors (see below), whose sum is σ = 2938840. Its totient is φ = 2644920.

The previous prime is 2791849. The next prime is 2791897. The reversal of 2791879 is 9781972.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2791879 - 2⁷ = 2791751 is a prime.

It is a super-3 number, since 3×2791879³ = 65284642589397733317, which contains 333 as substring.

It is a Duffinian number.

2791879 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2791849) 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, 73452 + ... + 73489.

It is an arithmetic number, because the mean of its divisors is an integer number (734710).

2^2791879 is an apocalyptic number.

2791879 is a deficient number, since it is larger than the sum of its proper divisors (146961).

2791879 is a wasteful number, since it uses less digits than its factorization.

2791879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146960.

The product of its digits is 63504, while the sum is 43.

The square root of 2791879 is about 1670.8916781168. The cubic root of 2791879 is about 140.8095781352.

The spelling of 2791879 in words is "two million, seven hundred ninety-one thousand, eight hundred seventy-nine".