394492472 has 64 divisors (see below), whose sum is σ = 827573760. Its totient is φ = 174787200.

The previous prime is 394492457. The next prime is 394492493. The reversal of 394492472 is 274294493.

It is a Harshad number since it is a multiple of its sum of digits (44).

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, 643238 + ... + 643850.

It is an arithmetic number, because the mean of its divisors is an integer number (12930840).

Almost surely, 2^394492472 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 394492472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (413786880).

394492472 is an abundant number, since it is smaller than the sum of its proper divisors (433081288).

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

394492472 is a wasteful number, since it uses less digits than its factorization.

394492472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 800 counting only the distinct ones).

The product of its digits is 435456, while the sum is 44.

The square root of 394492472 is about 19861.8345577643. The cubic root of 394492472 is about 733.4090083522.

The spelling of 394492472 in words is "three hundred ninety-four million, four hundred ninety-two thousand, four hundred seventy-two".