556919999 has 4 divisors (see below), whose sum is σ = 581133936. Its totient is φ = 532706064.

The previous prime is 556919947. The next prime is 556920037. The reversal of 556919999 is 999919655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-556919999 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 (556919899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12106934 + ... + 12106979.

It is an arithmetic number, because the mean of its divisors is an integer number (145283484).

Almost surely, 2^556919999 is an apocalyptic number.

556919999 is a deficient number, since it is larger than the sum of its proper divisors (24213937).

556919999 is a wasteful number, since it uses less digits than its factorization.

556919999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24213936.

The product of its digits is 8857350, while the sum is 62.

The square root of 556919999 is about 23599.1525059694. The cubic root of 556919999 is about 822.7431426101.

The spelling of 556919999 in words is "five hundred fifty-six million, nine hundred nineteen thousand, nine hundred ninety-nine".