394057338 has 16 divisors (see below), whose sum is σ = 789082176. Its totient is φ = 131191200.

The previous prime is 394057309. The next prime is 394057369. The reversal of 394057338 is 833750493.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 394057338.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34963 + ... + 44838.

It is an arithmetic number, because the mean of its divisors is an integer number (49317636).

Almost surely, 2^394057338 is an apocalyptic number.

394057338 is an abundant number, since it is smaller than the sum of its proper divisors (395024838).

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

394057338 is a wasteful number, since it uses less digits than its factorization.

394057338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80629.

The product of its (nonzero) digits is 272160, while the sum is 42.

The square root of 394057338 is about 19850.8775120900. The cubic root of 394057338 is about 733.1392536451.

The spelling of 394057338 in words is "three hundred ninety-four million, fifty-seven thousand, three hundred thirty-eight".