394216704 has 108 divisors (see below), whose sum is σ = 1299051936. Its totient is φ = 112628736.

The previous prime is 394216699. The next prime is 394216727. The reversal of 394216704 is 407612493.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3907 + ... + 28349.

Almost surely, 2^394216704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394216704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (649525968).

394216704 is an abundant number, since it is smaller than the sum of its proper divisors (904835232).

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

394216704 is a wasteful number, since it uses less digits than its factorization.

394216704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24472 (or 24455 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 394216704 is about 19854.8911858010. The cubic root of 394216704 is about 733.2380732093.

The spelling of 394216704 in words is "three hundred ninety-four million, two hundred sixteen thousand, seven hundred four".