171439923 has 8 divisors (see below), whose sum is σ = 229025728. Its totient is φ = 114073704.

The previous prime is 171439921. The next prime is 171439943. The reversal of 171439923 is 329934171.

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

It is not a de Polignac number, because 171439923 - 2¹ = 171439921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (171439921) 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, 53065 + ... + 56202.

It is an arithmetic number, because the mean of its divisors is an integer number (28628216).

Almost surely, 2^171439923 is an apocalyptic number.

171439923 is a deficient number, since it is larger than the sum of its proper divisors (57585805).

171439923 is a wasteful number, since it uses less digits than its factorization.

171439923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109793.

The product of its digits is 40824, while the sum is 39.

The square root of 171439923 is about 13093.5069022779. The cubic root of 171439923 is about 555.5254855828.

The spelling of 171439923 in words is "one hundred seventy-one million, four hundred thirty-nine thousand, nine hundred twenty-three".