2799889 has 8 divisors (see below), whose sum is σ = 2912000. Its totient is φ = 2689200.

The previous prime is 2799887. The next prime is 2799893. The reversal of 2799889 is 9889972.

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 2799889 - 2¹ = 2799887 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2799887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5362 + ... + 5860.

It is an arithmetic number, because the mean of its divisors is an integer number (364000).

2^2799889 is an apocalyptic number.

It is an amenable number.

2799889 is a deficient number, since it is larger than the sum of its proper divisors (112111).

2799889 is a wasteful number, since it uses less digits than its factorization.

2799889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 711.

The product of its digits is 653184, while the sum is 52.

The square root of 2799889 is about 1673.2868851455. The cubic root of 2799889 is about 140.9441121163.

It can be divided in two parts, 27 and 99889, that multiplied together give a triangular number (2697003 = T₂₃₂₂).

The spelling of 2799889 in words is "two million, seven hundred ninety-nine thousand, eight hundred eighty-nine".