394466388 has 24 divisors (see below), whose sum is σ = 923371008. Its totient is φ = 131067456.

The previous prime is 394466327. The next prime is 394466411. The reversal of 394466388 is 883664493.

It is a happy number.

It is a super-3 number, since 3×394466388³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 394466388.

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, 48756 + ... + 56267.

It is an arithmetic number, because the mean of its divisors is an integer number (38473792).

Almost surely, 2^394466388 is an apocalyptic number.

It is an amenable number.

394466388 is an abundant number, since it is smaller than the sum of its proper divisors (528904620).

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

394466388 is a wasteful number, since it uses less digits than its factorization.

394466388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105343 (or 105341 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 51.

The square root of 394466388 is about 19861.1779106880. The cubic root of 394466388 is about 733.3928435636.

The spelling of 394466388 in words is "three hundred ninety-four million, four hundred sixty-six thousand, three hundred eighty-eight".