394886173 has 4 divisors (see below), whose sum is σ = 430784928. Its totient is φ = 358987420.

The previous prime is 394886137. The next prime is 394886201. The reversal of 394886173 is 371688493.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-394886173 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394886113) 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, 17949361 + ... + 17949382.

It is an arithmetic number, because the mean of its divisors is an integer number (107696232).

Almost surely, 2^394886173 is an apocalyptic number.

It is an amenable number.

394886173 is a deficient number, since it is larger than the sum of its proper divisors (35898755).

394886173 is a wasteful number, since it uses less digits than its factorization.

394886173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35898754.

The product of its digits is 870912, while the sum is 49.

The square root of 394886173 is about 19871.7430790557. The cubic root of 394886173 is about 733.6529064228.

The spelling of 394886173 in words is "three hundred ninety-four million, eight hundred eighty-six thousand, one hundred seventy-three".