239109948817 has 2 divisors, whose sum is σ = 239109948818. Its totient is φ = 239109948816.

The previous prime is 239109948809. The next prime is 239109948839. The reversal of 239109948817 is 718849901932.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 208402293121 + 30707655696 = 456511^2 + 175236^2 .

It is a cyclic number.

It is not a de Polignac number, because 239109948817 - 2³ = 239109948809 is a prime.

It is a super-4 number, since 4×239109948817⁴ (a number of 47 digits) contains 4444 as substring.

It is not a weakly prime, because it can be changed into another prime (239109948317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119554974408 + 119554974409.

It is an arithmetic number, because the mean of its divisors is an integer number (119554974409).

Almost surely, 2^239109948817 is an apocalyptic number.

It is an amenable number.

239109948817 is a deficient number, since it is larger than the sum of its proper divisors (1).

239109948817 is an equidigital number, since it uses as much as digits as its factorization.

239109948817 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The spelling of 239109948817 in words is "two hundred thirty-nine billion, one hundred nine million, nine hundred forty-eight thousand, eight hundred seventeen".