1004440000 has 70 divisors (see below), whose sum is σ = 2490783944. Its totient is φ = 401760000.

The previous prime is 1004439991. The next prime is 1004440001. The reversal of 1004440000 is 444001.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004440001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 27445 + ... + 52555.

Almost surely, 2^1004440000 is an apocalyptic number.

1004440000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1004440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1245391972).

1004440000 is an abundant number, since it is smaller than the sum of its proper divisors (1486343944).

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

1004440000 is an frugal number, since it uses more digits than its factorization.

1004440000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25143 (or 25118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1004440000 is about 31692.9014134080. The cubic root of 1004440000 is about 1001.4778149870.

Adding to 1004440000 its reverse (444001), we get a palindrome (1004884001).

The spelling of 1004440000 in words is "one billion, four million, four hundred forty thousand".