171104639 has 2 divisors, whose sum is σ = 171104640. Its totient is φ = 171104638.

The previous prime is 171104623. The next prime is 171104719. The reversal of 171104639 is 936401171.

It is a weak prime.

It is an emirp because it is prime and its reverse (936401171) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 171104639 - 2⁴ = 171104623 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (171104039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 85552319 + 85552320.

It is an arithmetic number, because the mean of its divisors is an integer number (85552320).

Almost surely, 2^171104639 is an apocalyptic number.

171104639 is a deficient number, since it is larger than the sum of its proper divisors (1).

171104639 is an equidigital number, since it uses as much as digits as its factorization.

171104639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 171104639 is about 13080.6971908993. The cubic root of 171104639 is about 555.1631033219.

The spelling of 171104639 in words is "one hundred seventy-one million, one hundred four thousand, six hundred thirty-nine".