239613397 has 2 divisors, whose sum is σ = 239613398. Its totient is φ = 239613396.

The previous prime is 239613391. The next prime is 239613421. The reversal of 239613397 is 793316932.

239613397 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228795876 + 10817521 = 15126^2 + 3289^2 .

It is a cyclic number.

It is not a de Polignac number, because 239613397 - 2¹¹ = 239611349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239613391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119806698 + 119806699.

It is an arithmetic number, because the mean of its divisors is an integer number (119806699).

Almost surely, 2^239613397 is an apocalyptic number.

It is an amenable number.

239613397 is a deficient number, since it is larger than the sum of its proper divisors (1).

239613397 is an equidigital number, since it uses as much as digits as its factorization.

239613397 is an evil number, because the sum of its binary digits is even.

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

The square root of 239613397 is about 15479.4507977512. The cubic root of 239613397 is about 621.1126370230.

The spelling of 239613397 in words is "two hundred thirty-nine million, six hundred thirteen thousand, three hundred ninety-seven".