394545216 has 56 divisors (see below), whose sum is σ = 1124208064. Its totient is φ = 121397760.

The previous prime is 394545209. The next prime is 394545223. The reversal of 394545216 is 612545493.

It is an interprime number because it is at equal distance from previous prime (394545209) and next prime (394545223).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76540 + ... + 81531.

It is an arithmetic number, because the mean of its divisors is an integer number (20075144).

Almost surely, 2^394545216 is an apocalyptic number.

It is an amenable number.

394545216 is an abundant number, since it is smaller than the sum of its proper divisors (729662848).

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

394545216 is a wasteful number, since it uses less digits than its factorization.

394545216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158099 (or 158089 counting only the distinct ones).

The product of its digits is 129600, while the sum is 39.

The square root of 394545216 is about 19863.1622860007. The cubic root of 394545216 is about 733.4416927113.

The spelling of 394545216 in words is "three hundred ninety-four million, five hundred forty-five thousand, two hundred sixteen".