1000443144 has 64 divisors (see below), whose sum is σ = 2626099200. Its totient is φ = 316996416.

The previous prime is 1000443137. The next prime is 1000443151. The reversal of 1000443144 is 4413440001.

It is an interprime number because it is at equal distance from previous prime (1000443137) and next prime (1000443151).

It is a self number, because there is not a number n which added to its sum of digits gives 1000443144.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 84417 + ... + 95535.

It is an arithmetic number, because the mean of its divisors is an integer number (41032800).

Almost surely, 2^1000443144 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 1000443144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1313049600).

1000443144 is an abundant number, since it is smaller than the sum of its proper divisors (1625656056).

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

1000443144 is a wasteful number, since it uses less digits than its factorization.

1000443144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11314 (or 11310 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 1000443144 is about 31629.7825474662. The cubic root of 1000443144 is about 1000.1476928524.

Adding to 1000443144 its reverse (4413440001), we get a palindrome (5413883145).

The spelling of 1000443144 in words is "one billion, four hundred forty-three thousand, one hundred forty-four".