394220368 has 40 divisors (see below), whose sum is σ = 799377408. Its totient is φ = 187980672.

The previous prime is 394220339. The next prime is 394220383. The reversal of 394220368 is 863022493.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139546 + ... + 142342.

Almost surely, 2^394220368 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 394220368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399688704).

394220368 is an abundant number, since it is smaller than the sum of its proper divisors (405157040).

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

394220368 is a wasteful number, since it uses less digits than its factorization.

394220368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 3205 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 37.

The square root of 394220368 is about 19854.9834550422. The cubic root of 394220368 is about 733.2403448668.

It can be divided in two parts, 3942 and 20368, that added together give a triangular number (24310 = T₂₂₀).

The spelling of 394220368 in words is "three hundred ninety-four million, two hundred twenty thousand, three hundred sixty-eight".