394384896 has 160 divisors (see below), whose sum is σ = 1194209280. Its totient is φ = 128452608.

The previous prime is 394384889. The next prime is 394384897. The reversal of 394384896 is 698483493.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (394384897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 649425 + ... + 650031.

It is an arithmetic number, because the mean of its divisors is an integer number (7463808).

Almost surely, 2^394384896 is an apocalyptic number.

394384896 is a gapful number since it is divisible by the number (36) 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 394384896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (597104640).

394384896 is an abundant number, since it is smaller than the sum of its proper divisors (799824384).

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

394384896 is an equidigital number, since it uses as much as digits as its factorization.

394384896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 659 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The square root of 394384896 is about 19859.1262647680. The cubic root of 394384896 is about 733.3423367122.

The spelling of 394384896 in words is "three hundred ninety-four million, three hundred eighty-four thousand, eight hundred ninety-six".