13723398239 has 2 divisors, whose sum is σ = 13723398240. Its totient is φ = 13723398238.

The previous prime is 13723398217. The next prime is 13723398253. The reversal of 13723398239 is 93289332731.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13723398239 - 2⁸ = 13723397983 is a prime.

It is a super-2 number, since 2×13723398239² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13723328239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6861699119 + 6861699120.

It is an arithmetic number, because the mean of its divisors is an integer number (6861699120).

Almost surely, 2^13723398239 is an apocalyptic number.

13723398239 is a deficient number, since it is larger than the sum of its proper divisors (1).

13723398239 is an equidigital number, since it uses as much as digits as its factorization.

13723398239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 50.

The spelling of 13723398239 in words is "thirteen billion, seven hundred twenty-three million, three hundred ninety-eight thousand, two hundred thirty-nine".