3157389 has 12 divisors (see below), whose sum is σ = 4576572. Its totient is φ = 2097600.

The previous prime is 3157379. The next prime is 3157391. The reversal of 3157389 is 9837513.

3157389 is a `hidden beast` number, since 3 + 1 + 573 + 89 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 324900 + 2832489 = 570^2 + 1683^2 .

It is not a de Polignac number, because 3157389 - 2⁴ = 3157373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3157309) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3769 + ... + 4529.

It is an arithmetic number, because the mean of its divisors is an integer number (381381).

Almost surely, 2^3157389 is an apocalyptic number.

It is an amenable number.

3157389 is a deficient number, since it is larger than the sum of its proper divisors (1419183).

3157389 is a wasteful number, since it uses less digits than its factorization.

3157389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1225 counting only the distinct ones).

The product of its digits is 22680, while the sum is 36.

The square root of 3157389 is about 1776.9043305704. The cubic root of 3157389 is about 146.7042505839.

The spelling of 3157389 in words is "three million, one hundred fifty-seven thousand, three hundred eighty-nine".