2799389 has 4 divisors (see below), whose sum is σ = 2818080. Its totient is φ = 2780700.

The previous prime is 2799371. The next prime is 2799397. The reversal of 2799389 is 9839972.

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 2799389 - 2⁸ = 2799133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2799989) 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 3 ways as a sum of consecutive naturals, for example, 9119 + ... + 9420.

It is an arithmetic number, because the mean of its divisors is an integer number (704520).

2^2799389 is an apocalyptic number.

It is an amenable number.

2799389 is a deficient number, since it is larger than the sum of its proper divisors (18691).

2799389 is a wasteful number, since it uses less digits than its factorization.

2799389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18690.

The product of its digits is 244944, while the sum is 47.

The square root of 2799389 is about 1673.1374719371. The cubic root of 2799389 is about 140.9357217538.

It can be divided in two parts, 27993 and 89, that added together give a palindrome (28082).

The spelling of 2799389 in words is "two million, seven hundred ninety-nine thousand, three hundred eighty-nine".