2189392 has 20 divisors (see below), whose sum is σ = 4269940. Its totient is φ = 1087488.

The previous prime is 2189381. The next prime is 2189399. The reversal of 2189392 is 2939812.

It can be written as a sum of positive squares in 2 ways, for example, as 404496 + 1784896 = 636^2 + 1336^2 .

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2734 + ... + 3442.

It is an arithmetic number, because the mean of its divisors is an integer number (213497).

2^2189392 is an apocalyptic number.

It is an amenable number.

2189392 is a deficient number, since it is larger than the sum of its proper divisors (2080548).

2189392 is a wasteful number, since it uses less digits than its factorization.

2189392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 910 (or 904 counting only the distinct ones).

The product of its digits is 7776, while the sum is 34.

The square root of 2189392 is about 1479.6594202721. The cubic root of 2189392 is about 129.8497672809.

The spelling of 2189392 in words is "two million, one hundred eighty-nine thousand, three hundred ninety-two".