171363993 has 8 divisors (see below), whose sum is σ = 228996000. Its totient is φ = 113987328.

The previous prime is 171363979. The next prime is 171364003. The reversal of 171363993 is 399363171.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 171363993 - 2⁴ = 171363977 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (171363943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62263 + ... + 64956.

It is an arithmetic number, because the mean of its divisors is an integer number (28624500).

Almost surely, 2^171363993 is an apocalyptic number.

It is an amenable number.

171363993 is a deficient number, since it is larger than the sum of its proper divisors (57632007).

171363993 is a wasteful number, since it uses less digits than its factorization.

171363993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127671.

The product of its digits is 91854, while the sum is 42.

The square root of 171363993 is about 13090.6070523868. The cubic root of 171363993 is about 555.4434601942.

The spelling of 171363993 in words is "one hundred seventy-one million, three hundred sixty-three thousand, nine hundred ninety-three".