2879869 has 4 divisors (see below), whose sum is σ = 2972800. Its totient is φ = 2786940.

The previous prime is 2879857. The next prime is 2879873. The reversal of 2879869 is 9689782.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2879869 - 2⁵ = 2879837 is a prime.

It is a super-2 number, since 2×2879869² = 16587290914322, which contains 22 as substring.

It is a Duffinian number.

2879869 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2879819) 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, 46419 + ... + 46480.

It is an arithmetic number, because the mean of its divisors is an integer number (743200).

2^2879869 is an apocalyptic number.

It is an amenable number.

2879869 is a deficient number, since it is larger than the sum of its proper divisors (92931).

2879869 is an equidigital number, since it uses as much as digits as its factorization.

2879869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92930.

The product of its digits is 435456, while the sum is 49.

The square root of 2879869 is about 1697.0176781637. The cubic root of 2879869 is about 142.2735749570.

It can be divided in two parts, 28 and 79869, that added together give a palindrome (79897).

The spelling of 2879869 in words is "two million, eight hundred seventy-nine thousand, eight hundred sixty-nine".