394813460 has 24 divisors (see below), whose sum is σ = 829912776. Its totient is φ = 157772160.

The previous prime is 394813439. The next prime is 394813493. The reversal of 394813460 is 64318493.

It can be written as a sum of positive squares in 4 ways, for example, as 211644304 + 183169156 = 14548^2 + 13534^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12830 + ... + 30890.

It is an arithmetic number, because the mean of its divisors is an integer number (34579699).

Almost surely, 2^394813460 is an apocalyptic number.

It is an amenable number.

394813460 is an abundant number, since it is smaller than the sum of its proper divisors (435099316).

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

394813460 is a wasteful number, since it uses less digits than its factorization.

394813460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19163 (or 19161 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 394813460 is about 19869.9134371542. The cubic root of 394813460 is about 733.6078728730.

The spelling of 394813460 in words is "three hundred ninety-four million, eight hundred thirteen thousand, four hundred sixty".