2239389 has 6 divisors (see below), whose sum is σ = 3234686. Its totient is φ = 1492920.

The previous prime is 2239387. The next prime is 2239417. The reversal of 2239389 is 9839322.

2239389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1368900 + 870489 = 1170^2 + 933^2 .

It is not a de Polignac number, because 2239389 - 2¹ = 2239387 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2239387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124402 + ... + 124419.

2^2239389 is an apocalyptic number.

It is an amenable number.

2239389 is a deficient number, since it is larger than the sum of its proper divisors (995297).

2239389 is a wasteful number, since it uses less digits than its factorization.

2239389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248827 (or 248824 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 2239389 is about 1496.4588200148. The cubic root of 2239389 is about 130.8307547691.

It can be divided in two parts, 2239 and 389, that added together give a triangular number (2628 = T₇₂).

The spelling of 2239389 in words is "two million, two hundred thirty-nine thousand, three hundred eighty-nine".