559639421 has 4 divisors (see below), whose sum is σ = 610515744. Its totient is φ = 508763100.

The previous prime is 559639417. The next prime is 559639429. The reversal of 559639421 is 124936955.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 559639421 - 2² = 559639417 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 (559639429) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25438145 + ... + 25438166.

It is an arithmetic number, because the mean of its divisors is an integer number (152628936).

Almost surely, 2^559639421 is an apocalyptic number.

It is an amenable number.

559639421 is a deficient number, since it is larger than the sum of its proper divisors (50876323).

559639421 is a wasteful number, since it uses less digits than its factorization.

559639421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50876322.

The product of its digits is 291600, while the sum is 44.

The square root of 559639421 is about 23656.6992837124. The cubic root of 559639421 is about 824.0801113906.

The spelling of 559639421 in words is "five hundred fifty-nine million, six hundred thirty-nine thousand, four hundred twenty-one".