439841868 has 48 divisors (see below), whose sum is σ = 1096475520. Its totient is φ = 136819584.

The previous prime is 439841861. The next prime is 439841917. The reversal of 439841868 is 868148934.

It is a self number, because there is not a number n which added to its sum of digits gives 439841868.

It is not an unprimeable number, because it can be changed into a prime (439841861) 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, 880 + ... + 29672.

It is an arithmetic number, because the mean of its divisors is an integer number (22843240).

Almost surely, 2^439841868 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 439841868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (548237760).

439841868 is an abundant number, since it is smaller than the sum of its proper divisors (656633652).

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

439841868 is a wasteful number, since it uses less digits than its factorization.

439841868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28886 (or 28884 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 439841868 is about 20972.4073010229. The cubic root of 439841868 is about 760.4993647985.

The spelling of 439841868 in words is "four hundred thirty-nine million, eight hundred forty-one thousand, eight hundred sixty-eight".