2057389 has 4 divisors (see below), whose sum is σ = 2092320. Its totient is φ = 2022460.

The previous prime is 2057387. The next prime is 2057399. The reversal of 2057389 is 9837502.

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 2057389 - 2¹ = 2057387 is a prime.

It is a super-3 number, since 3×2057389³ = 26125853983331264607, which contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2057381) 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, 17377 + ... + 17494.

It is an arithmetic number, because the mean of its divisors is an integer number (523080).

2^2057389 is an apocalyptic number.

It is an amenable number.

2057389 is a deficient number, since it is larger than the sum of its proper divisors (34931).

2057389 is an equidigital number, since it uses as much as digits as its factorization.

2057389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34930.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 2057389 is about 1434.3601360886. The cubic root of 2057389 is about 127.1858522627.

The spelling of 2057389 in words is "two million, fifty-seven thousand, three hundred eighty-nine".