239691097 has 2 divisors, whose sum is σ = 239691098. Its totient is φ = 239691096.

The previous prime is 239691077. The next prime is 239691103. The reversal of 239691097 is 790196932.

239691097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 198359056 + 41332041 = 14084^2 + 6429^2 .

It is a cyclic number.

It is not a de Polignac number, because 239691097 - 2²⁷ = 105473369 is a prime.

It is not a weakly prime, because it can be changed into another prime (239691077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119845548 + 119845549.

It is an arithmetic number, because the mean of its divisors is an integer number (119845549).

Almost surely, 2^239691097 is an apocalyptic number.

It is an amenable number.

239691097 is a deficient number, since it is larger than the sum of its proper divisors (1).

239691097 is an equidigital number, since it uses as much as digits as its factorization.

239691097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 183708, while the sum is 46.

The square root of 239691097 is about 15481.9603732861. The cubic root of 239691097 is about 621.1797663195.

The spelling of 239691097 in words is "two hundred thirty-nine million, six hundred ninety-one thousand, ninety-seven".