394473620 has 48 divisors (see below), whose sum is σ = 837838848. Its totient is φ = 156003840.

The previous prime is 394473589. The next prime is 394473643. The reversal of 394473620 is 26374493.

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, 1074677 + ... + 1075043.

It is an arithmetic number, because the mean of its divisors is an integer number (17454976).

Almost surely, 2^394473620 is an apocalyptic number.

It is an amenable number.

394473620 is an abundant number, since it is smaller than the sum of its proper divisors (443365228).

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

394473620 is a wasteful number, since it uses less digits than its factorization.

394473620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840 (or 838 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 38.

The square root of 394473620 is about 19861.3599735768. The cubic root of 394473620 is about 733.3973254534.

The spelling of 394473620 in words is "three hundred ninety-four million, four hundred seventy-three thousand, six hundred twenty".