394346512 has 60 divisors (see below), whose sum is σ = 900180480. Its totient is φ = 166840128.

The previous prime is 394346489. The next prime is 394346527. The reversal of 394346512 is 215643493.

It is a super-2 number, since 2×394346512² = 311018343053132288, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58753 + ... + 65119.

It is an arithmetic number, because the mean of its divisors is an integer number (15003008).

Almost surely, 2^394346512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394346512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450090240).

394346512 is an abundant number, since it is smaller than the sum of its proper divisors (505833968).

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

394346512 is a wasteful number, since it uses less digits than its factorization.

394346512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6468 (or 6455 counting only the distinct ones).

The product of its digits is 77760, while the sum is 37.

The square root of 394346512 is about 19858.1598341840. The cubic root of 394346512 is about 733.3185447890.

The spelling of 394346512 in words is "three hundred ninety-four million, three hundred forty-six thousand, five hundred twelve".