239317693 has 4 divisors (see below), whose sum is σ = 239432128. Its totient is φ = 239203260.

The previous prime is 239317679. The next prime is 239317849. The reversal of 239317693 is 396713932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-239317693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239317493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54021 + ... + 58282.

It is an arithmetic number, because the mean of its divisors is an integer number (59858032).

Almost surely, 2^239317693 is an apocalyptic number.

It is an amenable number.

239317693 is a deficient number, since it is larger than the sum of its proper divisors (114435).

239317693 is a wasteful number, since it uses less digits than its factorization.

239317693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114434.

The product of its digits is 183708, while the sum is 43.

The square root of 239317693 is about 15469.8963474226. The cubic root of 239317693 is about 620.8570293114.

The spelling of 239317693 in words is "two hundred thirty-nine million, three hundred seventeen thousand, six hundred ninety-three".