239610139 has 2 divisors, whose sum is σ = 239610140. Its totient is φ = 239610138.

The previous prime is 239610131. The next prime is 239610143. The reversal of 239610139 is 931016932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 239610139 - 2³ = 239610131 is a prime.

It is not a weakly prime, because it can be changed into another prime (239610131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119805069 + 119805070.

It is an arithmetic number, because the mean of its divisors is an integer number (119805070).

Almost surely, 2^239610139 is an apocalyptic number.

239610139 is a deficient number, since it is larger than the sum of its proper divisors (1).

239610139 is an equidigital number, since it uses as much as digits as its factorization.

239610139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 239610139 is about 15479.3455611017. The cubic root of 239610139 is about 621.1098219409.

The spelling of 239610139 in words is "two hundred thirty-nine million, six hundred ten thousand, one hundred thirty-nine".