557979239 has 2 divisors, whose sum is σ = 557979240. Its totient is φ = 557979238.

The previous prime is 557979229. The next prime is 557979259. The reversal of 557979239 is 932979755.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 557979239 - 2⁸ = 557978983 is a prime.

It is a super-2 number, since 2×557979239² = 622681662310038242, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (557979229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 278989619 + 278989620.

It is an arithmetic number, because the mean of its divisors is an integer number (278989620).

Almost surely, 2^557979239 is an apocalyptic number.

557979239 is a deficient number, since it is larger than the sum of its proper divisors (1).

557979239 is an equidigital number, since it uses as much as digits as its factorization.

557979239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5358150, while the sum is 56.

The square root of 557979239 is about 23621.5841763418. The cubic root of 557979239 is about 823.2644206647.

The spelling of 557979239 in words is "five hundred fifty-seven million, nine hundred seventy-nine thousand, two hundred thirty-nine".