171393963 has 8 divisors (see below), whose sum is σ = 246104208. Its totient is φ = 105473184.

The previous prime is 171393923. The next prime is 171393967. The reversal of 171393963 is 369393171.

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

It is not a de Polignac number, because 171393963 - 2¹⁶ = 171328427 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 (171393967) 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, 2197320 + ... + 2197397.

It is an arithmetic number, because the mean of its divisors is an integer number (30763026).

Almost surely, 2^171393963 is an apocalyptic number.

171393963 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

171393963 is a deficient number, since it is larger than the sum of its proper divisors (74710245).

171393963 is a wasteful number, since it uses less digits than its factorization.

171393963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4394733.

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

The square root of 171393963 is about 13091.7517162525. The cubic root of 171393963 is about 555.4758389724.

The spelling of 171393963 in words is "one hundred seventy-one million, three hundred ninety-three thousand, nine hundred sixty-three".