556439 has 8 divisors (see below), whose sum is σ = 625632. Its totient is φ = 491040.

The previous prime is 556403. The next prime is 556441. The reversal of 556439 is 934655.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (556459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 632 + ... + 1229.

It is an arithmetic number, because the mean of its divisors is an integer number (78204).

2⁵⁵⁶⁴³⁹ is an apocalyptic number.

556439 is a deficient number, since it is larger than the sum of its proper divisors (69193).

556439 is a wasteful number, since it uses less digits than its factorization.

556439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1897.

The product of its digits is 16200, while the sum is 32.

The square root of 556439 is about 745.9483896356. The cubic root of 556439 is about 82.2506212941.

The spelling of 556439 in words is "five hundred fifty-six thousand, four hundred thirty-nine".