239712157 has 2 divisors, whose sum is σ = 239712158. Its totient is φ = 239712156.

The previous prime is 239712133. The next prime is 239712167. The reversal of 239712157 is 751217932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163481796 + 76230361 = 12786^2 + 8731^2 .

It is a cyclic number.

It is not a de Polignac number, because 239712157 - 2⁷ = 239712029 is a prime.

It is equal to p_13146679 and since 239712157 and 13146679 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239712167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119856078 + 119856079.

It is an arithmetic number, because the mean of its divisors is an integer number (119856079).

Almost surely, 2^239712157 is an apocalyptic number.

It is an amenable number.

239712157 is a deficient number, since it is larger than the sum of its proper divisors (1).

239712157 is an equidigital number, since it uses as much as digits as its factorization.

239712157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26460, while the sum is 37.

The square root of 239712157 is about 15482.6405047718. The cubic root of 239712157 is about 621.1979587109.

The spelling of 239712157 in words is "two hundred thirty-nine million, seven hundred twelve thousand, one hundred fifty-seven".