899394444 has 144 divisors (see below), whose sum is σ = 2583060480. Its totient is φ = 261912960.

The previous prime is 899394437. The next prime is 899394467. The reversal of 899394444 is 444493998.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 681217 + ... + 682535.

It is an arithmetic number, because the mean of its divisors is an integer number (17937920).

Almost surely, 2^899394444 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 899394444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1291530240).

899394444 is an abundant number, since it is smaller than the sum of its proper divisors (1683666036).

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

899394444 is a wasteful number, since it uses less digits than its factorization.

899394444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420 (or 1415 counting only the distinct ones).

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

The square root of 899394444 is about 29989.9057017524. The cubic root of 899394444 is about 965.2727960627.

The spelling of 899394444 in words is "eight hundred ninety-nine million, three hundred ninety-four thousand, four hundred forty-four".