2004445 has 8 divisors (see below), whose sum is σ = 2461536. Its totient is φ = 1566096.

The previous prime is 2004433. The next prime is 2004461. The reversal of 2004445 is 5444002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2004445 - 2¹¹ = 2002397 is a prime.

It is a Duffinian number.

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, 4447 + ... + 4876.

It is an arithmetic number, because the mean of its divisors is an integer number (307692).

2^2004445 is an apocalyptic number.

It is an amenable number.

2004445 is a deficient number, since it is larger than the sum of its proper divisors (457091).

2004445 is an equidigital number, since it uses as much as digits as its factorization.

2004445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9371.

The product of its (nonzero) digits is 640, while the sum is 19.

The square root of 2004445 is about 1415.7842349737. The cubic root of 2004445 is about 126.0853750771.

Adding to 2004445 its reverse (5444002), we get a palindrome (7448447).

It can be divided in two parts, 2004 and 445, that multiplied together give a triangular number (891780 = T₁₃₃₅).

The spelling of 2004445 in words is "two million, four thousand, four hundred forty-five".