1004445401 has 4 divisors (see below), whose sum is σ = 1031592612. Its totient is φ = 977298192.

The previous prime is 1004445389. The next prime is 1004445419. The reversal of 1004445401 is 1045444001.

It is a happy number.

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 745235401 + 259210000 = 27299^2 + 16100^2 .

It is a cyclic number.

It is not a de Polignac number, because 1004445401 - 2¹⁴ = 1004429017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1004445451) 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, 13573550 + ... + 13573623.

It is an arithmetic number, because the mean of its divisors is an integer number (257898153).

Almost surely, 2^1004445401 is an apocalyptic number.

It is an amenable number.

1004445401 is a deficient number, since it is larger than the sum of its proper divisors (27147211).

1004445401 is an equidigital number, since it uses as much as digits as its factorization.

1004445401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27147210.

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1004445401 is about 31692.9866216486. The cubic root of 1004445401 is about 1001.4796100078.

Adding to 1004445401 its reverse (1045444001), we get a palindrome (2049889402).

The spelling of 1004445401 in words is "one billion, four million, four hundred forty-five thousand, four hundred one".