2861439 has 16 divisors (see below), whose sum is σ = 4412160. Its totient is φ = 1615680.

The previous prime is 2861399. The next prime is 2861447. The reversal of 2861439 is 9341682.

It is not a de Polignac number, because 2861439 - 2¹¹ = 2859391 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2861479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1104 + ... + 2634.

It is an arithmetic number, because the mean of its divisors is an integer number (275760).

2^2861439 is an apocalyptic number.

2861439 is a deficient number, since it is larger than the sum of its proper divisors (1550721).

2861439 is a wasteful number, since it uses less digits than its factorization.

2861439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1630.

The product of its digits is 10368, while the sum is 33.

The square root of 2861439 is about 1691.5788482953. The cubic root of 2861439 is about 141.9694273929.

The spelling of 2861439 in words is "two million, eight hundred sixty-one thousand, four hundred thirty-nine".