2056439 has 16 divisors (see below), whose sum is σ = 2716416. Its totient is φ = 1507200.

The previous prime is 2056421. The next prime is 2056441. The reversal of 2056439 is 9346502.

It is a cyclic number.

It is not a de Polignac number, because 2056439 - 2¹² = 2052343 is a prime.

It is a d-powerful number, because it can be written as 2¹³ + 0 + 5⁹ + 6 + 4⁷ + 3⁹ + 9⁵ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2056409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 524 + ... + 2094.

It is an arithmetic number, because the mean of its divisors is an integer number (169776).

2^2056439 is an apocalyptic number.

2056439 is a deficient number, since it is larger than the sum of its proper divisors (659977).

2056439 is a wasteful number, since it uses less digits than its factorization.

2056439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1606.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 2056439 is about 1434.0289397359. The cubic root of 2056439 is about 127.1662732135.

The spelling of 2056439 in words is "two million, fifty-six thousand, four hundred thirty-nine".