394905222 has 12 divisors (see below), whose sum is σ = 855628020. Its totient is φ = 131635068.

The previous prime is 394905167. The next prime is 394905227. The reversal of 394905222 is 222509493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394905227) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10969572 + ... + 10969607.

It is an arithmetic number, because the mean of its divisors is an integer number (71302335).

Almost surely, 2^394905222 is an apocalyptic number.

394905222 is an abundant number, since it is smaller than the sum of its proper divisors (460722798).

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

394905222 is a wasteful number, since it uses less digits than its factorization.

394905222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21939187 (or 21939184 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 394905222 is about 19872.2223719442. Note that the first 3 decimals coincide. The cubic root of 394905222 is about 733.6647031805.

The spelling of 394905222 in words is "three hundred ninety-four million, nine hundred five thousand, two hundred twenty-two".