319389444 has 72 divisors (see below), whose sum is σ = 883646400. Its totient is φ = 96465600.

The previous prime is 319389443. The next prime is 319389491. The reversal of 319389444 is 444983913.

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 319389444.

It is not an unprimeable number, because it can be changed into a prime (319389443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137049 + ... + 139359.

Almost surely, 2^319389444 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 319389444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (441823200).

319389444 is an abundant number, since it is smaller than the sum of its proper divisors (564256956).

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

319389444 is a wasteful number, since it uses less digits than its factorization.

319389444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2681 (or 2676 counting only the distinct ones).

The product of its digits is 373248, while the sum is 45.

The square root of 319389444 is about 17871.4701130041. The cubic root of 319389444 is about 683.5550866784. Note that the first 3 decimals are identical.

The spelling of 319389444 in words is "three hundred nineteen million, three hundred eighty-nine thousand, four hundred forty-four".