394421902 has 32 divisors (see below), whose sum is σ = 685843200. Its totient is φ = 166632000.

The previous prime is 394421899. The next prime is 394421921. The reversal of 394421902 is 209124493.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 375474 + ... + 376522.

It is an arithmetic number, because the mean of its divisors is an integer number (21432600).

Almost surely, 2^394421902 is an apocalyptic number.

394421902 is a deficient number, since it is larger than the sum of its proper divisors (291421298).

394421902 is a wasteful number, since it uses less digits than its factorization.

394421902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1416.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 394421902 is about 19860.0579556053. The cubic root of 394421902 is about 733.3652730350.

The spelling of 394421902 in words is "three hundred ninety-four million, four hundred twenty-one thousand, nine hundred two".