394843488 has 72 divisors (see below), whose sum is σ = 1122371208. Its totient is φ = 121485312.

The previous prime is 394843487. The next prime is 394843499. The reversal of 394843488 is 884348493.

It is a super-2 number, since 2×394843488² = 311802760032012288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 394843488.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394843487) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4056 + ... + 28392.

It is an arithmetic number, because the mean of its divisors is an integer number (15588489).

Almost surely, 2^394843488 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 394843488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (561185604).

394843488 is an abundant number, since it is smaller than the sum of its proper divisors (727527720).

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

394843488 is a wasteful number, since it uses less digits than its factorization.

394843488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24376 (or 24355 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 51.

The square root of 394843488 is about 19870.6690375538. The cubic root of 394843488 is about 733.6264708701.

The spelling of 394843488 in words is "three hundred ninety-four million, eight hundred forty-three thousand, four hundred eighty-eight".