404443045 has 4 divisors (see below), whose sum is σ = 485331660. Its totient is φ = 323554432.

The previous prime is 404443027. The next prime is 404443049. The reversal of 404443045 is 540344404.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 69772609 + 334670436 = 8353^2 + 18294^2 .

It is a cyclic number.

It is not a de Polignac number, because 404443045 - 2⁷ = 404442917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404443049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40444300 + ... + 40444309.

It is an arithmetic number, because the mean of its divisors is an integer number (121332915).

Almost surely, 2^404443045 is an apocalyptic number.

It is an amenable number.

404443045 is a deficient number, since it is larger than the sum of its proper divisors (80888615).

404443045 is an equidigital number, since it uses as much as digits as its factorization.

404443045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80888614.

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 404443045 is about 20110.7693786190. The cubic root of 404443045 is about 739.5243138373.

Adding to 404443045 its reverse (540344404), we get a palindrome (944787449).

It can be divided in two parts, 4044 and 43045, that added together give a square (47089 = 217²).

The spelling of 404443045 in words is "four hundred four million, four hundred forty-three thousand, forty-five".