1002000444 has 24 divisors (see below), whose sum is σ = 2338828800. Its totient is φ = 333881904.

The previous prime is 1002000427. The next prime is 1002000539. The reversal of 1002000444 is 4440002001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24757 + ... + 51155.

It is an arithmetic number, because the mean of its divisors is an integer number (97451200).

Almost surely, 2^1002000444 is an apocalyptic number.

It is an amenable number.

1002000444 is an abundant number, since it is smaller than the sum of its proper divisors (1336828356).

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

1002000444 is a wasteful number, since it uses less digits than its factorization.

1002000444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29569 (or 29567 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 1002000444 is about 31654.3905959347. The cubic root of 1002000444 is about 1000.6663705184. Note that the first 3 decimals are identical.

Adding to 1002000444 its reverse (4440002001), we get a palindrome (5442002445).

The spelling of 1002000444 in words is "one billion, two million, four hundred forty-four", and thus it is an aban number.