443381904 has 160 divisors (see below), whose sum is σ = 1465620480. Its totient is φ = 125712000.

The previous prime is 443381903. The next prime is 443381909. The reversal of 443381904 is 409183344.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (443381903) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 456139 + ... + 457109.

It is an arithmetic number, because the mean of its divisors is an integer number (9160128).

Almost surely, 2^443381904 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 443381904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (732810240).

443381904 is an abundant number, since it is smaller than the sum of its proper divisors (1022238576).

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

443381904 is a wasteful number, since it uses less digits than its factorization.

443381904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1146 (or 1134 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The square root of 443381904 is about 21056.6356287038. The cubic root of 443381904 is about 762.5341904941.

The spelling of 443381904 in words is "four hundred forty-three million, three hundred eighty-one thousand, nine hundred four".