239814658609 has 2 divisors, whose sum is σ = 239814658610. Its totient is φ = 239814658608.

The previous prime is 239814658607. The next prime is 239814658649. The reversal of 239814658609 is 906856418932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196829759025 + 42984899584 = 443655^2 + 207328^2 .

It is a cyclic number.

It is not a de Polignac number, because 239814658609 - 2¹ = 239814658607 is a prime.

It is a super-2 number, since 2×239814658609² (a number of 24 digits) contains 22 as substring.

Together with 239814658607, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (239814658607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119907329304 + 119907329305.

It is an arithmetic number, because the mean of its divisors is an integer number (119907329305).

Almost surely, 2^239814658609 is an apocalyptic number.

It is an amenable number.

239814658609 is a deficient number, since it is larger than the sum of its proper divisors (1).

239814658609 is an equidigital number, since it uses as much as digits as its factorization.

239814658609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22394880, while the sum is 61.

The spelling of 239814658609 in words is "two hundred thirty-nine billion, eight hundred fourteen million, six hundred fifty-eight thousand, six hundred nine".