1004404992 has 72 divisors (see below), whose sum is σ = 2685325440. Its totient is φ = 333281280.

The previous prime is 1004404927. The next prime is 1004405021. The reversal of 1004404992 is 2994044001.

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, 173017 + ... + 178727.

Almost surely, 2^1004404992 is an apocalyptic number.

1004404992 is a gapful number since it is divisible by the number (12) 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 1004404992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1342662720).

1004404992 is an abundant number, since it is smaller than the sum of its proper divisors (1680920448).

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

1004404992 is an equidigital number, since it uses as much as digits as its factorization.

1004404992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5959 (or 5945 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 1004404992 is about 31692.3491082627. The cubic root of 1004404992 is about 1001.4661799325.

Adding to 1004404992 its reverse (2994044001), we get a palindrome (3998448993).

The spelling of 1004404992 in words is "one billion, four million, four hundred four thousand, nine hundred ninety-two".