170239913 has 6 divisors (see below), whose sum is σ = 174495102. Its totient is φ = 166086080.

The previous prime is 170239891. The next prime is 170239961. The reversal of 170239913 is 319932071.

170239913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 3003289 + 167236624 = 1733^2 + 12932^2 .

It is not a de Polignac number, because 170239913 - 2¹⁶ = 170174377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (170239963) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48956 + ... + 52317.

It is an arithmetic number, because the mean of its divisors is an integer number (29082517).

Almost surely, 2^170239913 is an apocalyptic number.

It is an amenable number.

170239913 is a deficient number, since it is larger than the sum of its proper divisors (4255189).

170239913 is an equidigital number, since it uses as much as digits as its factorization.

170239913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101355 (or 101314 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 170239913 is about 13047.6018102945. The cubic root of 170239913 is about 554.2262984831.

The spelling of 170239913 in words is "one hundred seventy million, two hundred thirty-nine thousand, nine hundred thirteen".