394398752 has 96 divisors (see below), whose sum is σ = 881362944. Its totient is φ = 172166400.

The previous prime is 394398737. The next prime is 394398757. The reversal of 394398752 is 257893493.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 394398752.

It is not an unprimeable number, because it can be changed into a prime (394398757) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1074473 + ... + 1074839.

It is an arithmetic number, because the mean of its divisors is an integer number (9180864).

Almost surely, 2^394398752 is an apocalyptic number.

394398752 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 394398752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (440681472).

394398752 is an abundant number, since it is smaller than the sum of its proper divisors (486964192).

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

394398752 is a wasteful number, since it uses less digits than its factorization.

394398752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502 (or 494 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 50.

The square root of 394398752 is about 19859.4751189451. The cubic root of 394398752 is about 733.3509248305.

The spelling of 394398752 in words is "three hundred ninety-four million, three hundred ninety-eight thousand, seven hundred fifty-two".