2879891 has 8 divisors (see below), whose sum is σ = 3310944. Its totient is φ = 2453760.

The previous prime is 2879879. The next prime is 2879893. The reversal of 2879891 is 1989782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2879891 - 2¹⁰ = 2878867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2879893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 131 + ... + 2403.

It is an arithmetic number, because the mean of its divisors is an integer number (413868).

2^2879891 is an apocalyptic number.

2879891 is a deficient number, since it is larger than the sum of its proper divisors (431053).

2879891 is a wasteful number, since it uses less digits than its factorization.

2879891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2461.

The product of its digits is 72576, while the sum is 44.

The square root of 2879891 is about 1697.0241601109. The cubic root of 2879891 is about 142.2739372432.

The spelling of 2879891 in words is "two million, eight hundred seventy-nine thousand, eight hundred ninety-one".