404000445 has 8 divisors (see below), whose sum is σ = 646400736. Its totient is φ = 215466896.

The previous prime is 404000423. The next prime is 404000449. The reversal of 404000445 is 544000404.

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 404000445 - 2¹⁵ = 403967677 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404000449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13466667 + ... + 13466696.

It is an arithmetic number, because the mean of its divisors is an integer number (80800092).

Almost surely, 2^404000445 is an apocalyptic number.

It is an amenable number.

404000445 is a deficient number, since it is larger than the sum of its proper divisors (242400291).

404000445 is a wasteful number, since it uses less digits than its factorization.

404000445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26933371.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 404000445 is about 20099.7623120275. The cubic root of 404000445 is about 739.2544505971.

Adding to 404000445 its reverse (544000404), we get a palindrome (948000849).

The spelling of 404000445 in words is "four hundred four million, four hundred forty-five", and thus it is an aban number.