394428718 has 8 divisors (see below), whose sum is σ = 592879680. Its totient is φ = 196802160.

The previous prime is 394428707. The next prime is 394428719. The reversal of 394428718 is 817824493.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394428719) 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, 204903 + ... + 206818.

It is an arithmetic number, because the mean of its divisors is an integer number (74109960).

Almost surely, 2^394428718 is an apocalyptic number.

394428718 is a deficient number, since it is larger than the sum of its proper divisors (198450962).

394428718 is a wasteful number, since it uses less digits than its factorization.

394428718 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412202.

The product of its digits is 387072, while the sum is 46.

The square root of 394428718 is about 19860.2295555716. The cubic root of 394428718 is about 733.3694974360.

The spelling of 394428718 in words is "three hundred ninety-four million, four hundred twenty-eight thousand, seven hundred eighteen".