5558399 has 16 divisors (see below), whose sum is σ = 7120896. Its totient is φ = 4212000.

The previous prime is 5558389. The next prime is 5558407. The reversal of 5558399 is 9938555.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 5558399 - 2⁸ = 5558143 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 (5558359) 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 15 ways as a sum of consecutive naturals, for example, 1874 + ... + 3824.

It is an arithmetic number, because the mean of its divisors is an integer number (445056).

Almost surely, 2^5558399 is an apocalyptic number.

5558399 is a deficient number, since it is larger than the sum of its proper divisors (1562497).

5558399 is a wasteful number, since it uses less digits than its factorization.

5558399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2006.

The product of its digits is 243000, while the sum is 44.

The square root of 5558399 is about 2357.6257124489. The cubic root of 5558399 is about 177.1399724829.

The spelling of 5558399 in words is "five million, five hundred fifty-eight thousand, three hundred ninety-nine".