171393934 has 4 divisors (see below), whose sum is σ = 257090904. Its totient is φ = 85696966.

The previous prime is 171393923. The next prime is 171393967. The reversal of 171393934 is 439393171.

171393934 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×171393934² = 58751761223992712, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42848482 + ... + 42848485.

It is an arithmetic number, because the mean of its divisors is an integer number (64272726).

Almost surely, 2^171393934 is an apocalyptic number.

171393934 is a deficient number, since it is larger than the sum of its proper divisors (85696970).

171393934 is an equidigital number, since it uses as much as digits as its factorization.

171393934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85696969.

The product of its digits is 61236, while the sum is 40.

The square root of 171393934 is about 13091.7506086848. The cubic root of 171393934 is about 555.4758076434.

The spelling of 171393934 in words is "one hundred seventy-one million, three hundred ninety-three thousand, nine hundred thirty-four".