170438459 has 2 divisors, whose sum is σ = 170438460. Its totient is φ = 170438458.

The previous prime is 170438399. The next prime is 170438461. The reversal of 170438459 is 954834071.

It is a strong prime.

It is an emirp because it is prime and its reverse (954834071) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-170438459 is a prime.

It is a super-3 number, since 3×170438459³ (a number of 26 digits) contains 333 as substring.

Together with 170438461, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (170438479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85219229 + 85219230.

It is an arithmetic number, because the mean of its divisors is an integer number (85219230).

Almost surely, 2^170438459 is an apocalyptic number.

170438459 is a deficient number, since it is larger than the sum of its proper divisors (1).

170438459 is an equidigital number, since it uses as much as digits as its factorization.

170438459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 170438459 is about 13055.2081178356. The cubic root of 170438459 is about 554.4416742662.

The spelling of 170438459 in words is "one hundred seventy million, four hundred thirty-eight thousand, four hundred fifty-nine".