2056389 has 16 divisors (see below), whose sum is σ = 2956800. Its totient is φ = 1267056.

The previous prime is 2056381. The next prime is 2056399. The reversal of 2056389 is 9836502.

It is a happy number.

It is not a de Polignac number, because 2056389 - 2³ = 2056381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056381) 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 15 ways as a sum of consecutive naturals, for example, 2032 + ... + 2870.

It is an arithmetic number, because the mean of its divisors is an integer number (184800).

2^2056389 is an apocalyptic number.

It is an amenable number.

2056389 is a deficient number, since it is larger than the sum of its proper divisors (900411).

2056389 is a wasteful number, since it uses less digits than its factorization.

2056389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 904.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 2056389 is about 1434.0115062300. The cubic root of 2056389 is about 127.1652425702.

Subtracting from 2056389 its sum of digits (33), we obtain a square (2056356 = 1434²).

The spelling of 2056389 in words is "two million, fifty-six thousand, three hundred eighty-nine".