5390243239 has 2 divisors, whose sum is σ = 5390243240. Its totient is φ = 5390243238.

The previous prime is 5390243167. The next prime is 5390243267. The reversal of 5390243239 is 9323420935.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5390243239 - 2¹⁹ = 5389718951 is a prime.

It is a super-2 number, since 2×5390243239² = 58109444351170422242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5390243939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2695121619 + 2695121620.

It is an arithmetic number, because the mean of its divisors is an integer number (2695121620).

Almost surely, 2^5390243239 is an apocalyptic number.

5390243239 is a deficient number, since it is larger than the sum of its proper divisors (1).

5390243239 is an equidigital number, since it uses as much as digits as its factorization.

5390243239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 174960, while the sum is 40.

The square root of 5390243239 is about 73418.2759195556. The cubic root of 5390243239 is about 1753.3533784239.

The spelling of 5390243239 in words is "five billion, three hundred ninety million, two hundred forty-three thousand, two hundred thirty-nine".