399174 has 8 divisors (see below), whose sum is σ = 798360. Its totient is φ = 133056.

The previous prime is 399173. The next prime is 399181. The reversal of 399174 is 471993.

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

399174 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 399174.

It is not an unprimeable number, because it can be changed into a prime (399173) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33259 + ... + 33270.

It is an arithmetic number, because the mean of its divisors is an integer number (99795).

2³⁹⁹¹⁷⁴ is an apocalyptic number.

399174 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399174 is a wasteful number, since it uses less digits than its factorization.

399174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66534.

The product of its digits is 6804, while the sum is 33.

The square root of 399174 is about 631.8021842317. The cubic root of 399174 is about 73.6298781890.

The spelling of 399174 in words is "three hundred ninety-nine thousand, one hundred seventy-four".