1004445 has 48 divisors (see below), whose sum is σ = 2004912. Its totient is φ = 460800.

The previous prime is 1004441. The next prime is 1004449. The reversal of 1004445 is 5444001.

1004445 = T₁₂ + T₁₃ + ... + T₁₈₁.

It is an interprime number because it is at equal distance from previous prime (1004441) and next prime (1004449).

It can be written as a sum of positive squares in 8 ways, for example, as 30276 + 974169 = 174^2 + 987^2 .

It is not a de Polignac number, because 1004445 - 2² = 1004441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1004441) 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 47 ways as a sum of consecutive naturals, for example, 9895 + ... + 9995.

It is an arithmetic number, because the mean of its divisors is an integer number (41769).

2^1004445 is an apocalyptic number.

1004445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1004445 is a deficient number, since it is larger than the sum of its proper divisors (1000467).

1004445 is a wasteful number, since it uses less digits than its factorization.

1004445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1004445 is about 1002.2200357207. The cubic root of 1004445 is about 100.1479476736.

Adding to 1004445 its reverse (5444001), we get a palindrome (6448446).

The spelling of 1004445 in words is "one million, four thousand, four hundred forty-five".