239439793 has 2 divisors, whose sum is σ = 239439794. Its totient is φ = 239439792.

The previous prime is 239439787. The next prime is 239439797. The reversal of 239439793 is 397934932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 225690529 + 13749264 = 15023^2 + 3708^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239439793 is a prime.

It is not a weakly prime, because it can be changed into another prime (239439797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119719896 + 119719897.

It is an arithmetic number, because the mean of its divisors is an integer number (119719897).

Almost surely, 2^239439793 is an apocalyptic number.

It is an amenable number.

239439793 is a deficient number, since it is larger than the sum of its proper divisors (1).

239439793 is an equidigital number, since it uses as much as digits as its factorization.

239439793 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1102248, while the sum is 49.

The square root of 239439793 is about 15473.8422184020. The cubic root of 239439793 is about 620.9625985428.

The spelling of 239439793 in words is "two hundred thirty-nine million, four hundred thirty-nine thousand, seven hundred ninety-three".