394766380 has 24 divisors (see below), whose sum is σ = 842602320. Its totient is φ = 155317440.

The previous prime is 394766347. The next prime is 394766381. The reversal of 394766380 is 83667493.

It is a self number, because there is not a number n which added to its sum of digits gives 394766380.

It is not an unprimeable number, because it can be changed into a prime (394766381) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 160570 + ... + 163009.

It is an arithmetic number, because the mean of its divisors is an integer number (35108430).

Almost surely, 2^394766380 is an apocalyptic number.

It is an amenable number.

394766380 is an abundant number, since it is smaller than the sum of its proper divisors (447835940).

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

394766380 is a wasteful number, since it uses less digits than its factorization.

394766380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323649 (or 323647 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 46.

The square root of 394766380 is about 19868.7286961194. The cubic root of 394766380 is about 733.5787117331.

The spelling of 394766380 in words is "three hundred ninety-four million, seven hundred sixty-six thousand, three hundred eighty".