2789944 has 16 divisors (see below), whose sum is σ = 5254200. Its totient is φ = 1388832.

The previous prime is 2789939. The next prime is 2789951. The reversal of 2789944 is 4499872.

It is a self number, because there is not a number n which added to its sum of digits gives 2789944.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1587 + ... + 2845.

2^2789944 is an apocalyptic number.

It is an amenable number.

2789944 is a deficient number, since it is larger than the sum of its proper divisors (2464256).

2789944 is a wasteful number, since it uses less digits than its factorization.

2789944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1542 (or 1538 counting only the distinct ones).

The product of its digits is 145152, while the sum is 43.

The square root of 2789944 is about 1670.3125456034. The cubic root of 2789944 is about 140.7770397736. Note that the first 3 decimals are identical.

The spelling of 2789944 in words is "two million, seven hundred eighty-nine thousand, nine hundred forty-four".