394990460 has 48 divisors (see below), whose sum is σ = 845661600. Its totient is φ = 154936320.

The previous prime is 394990459. The next prime is 394990493. The reversal of 394990460 is 64099493.

It is a happy number.

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, 376016 + ... + 377064.

It is an arithmetic number, because the mean of its divisors is an integer number (17617950).

Almost surely, 2^394990460 is an apocalyptic number.

It is an amenable number.

394990460 is an abundant number, since it is smaller than the sum of its proper divisors (450671140).

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

394990460 is a wasteful number, since it uses less digits than its factorization.

394990460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406 (or 1404 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 44.

The square root of 394990460 is about 19874.3669081558. The cubic root of 394990460 is about 733.7174851390.

The spelling of 394990460 in words is "three hundred ninety-four million, nine hundred ninety thousand, four hundred sixty".