394347852 has 60 divisors (see below), whose sum is σ = 1040122776. Its totient is φ = 130273920.

The previous prime is 394347841. The next prime is 394347911. The reversal of 394347852 is 258743493.

It is a junction number, because it is equal to n+sod(n) for n = 394347798 and 394347807.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 31227 + ... + 41997.

Almost surely, 2^394347852 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 394347852, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (520061388).

394347852 is an abundant number, since it is smaller than the sum of its proper divisors (645774924).

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

394347852 is a wasteful number, since it uses less digits than its factorization.

394347852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10900 (or 10889 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The square root of 394347852 is about 19858.1935734346. The cubic root of 394347852 is about 733.3193754001.

The spelling of 394347852 in words is "three hundred ninety-four million, three hundred forty-seven thousand, eight hundred fifty-two".