239842997 has 2 divisors, whose sum is σ = 239842998. Its totient is φ = 239842996.

The previous prime is 239842951. The next prime is 239843017. The reversal of 239842997 is 799248932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 220403716 + 19439281 = 14846^2 + 4409^2 .

It is a cyclic number.

It is not a de Polignac number, because 239842997 - 2¹² = 239838901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239842397) 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, 119921498 + 119921499.

It is an arithmetic number, because the mean of its divisors is an integer number (119921499).

Almost surely, 2^239842997 is an apocalyptic number.

It is an amenable number.

239842997 is a deficient number, since it is larger than the sum of its proper divisors (1).

239842997 is an equidigital number, since it uses as much as digits as its factorization.

239842997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 239842997 is about 15486.8653058003. The cubic root of 239842997 is about 621.3109591788.

The spelling of 239842997 in words is "two hundred thirty-nine million, eight hundred forty-two thousand, nine hundred ninety-seven".