1044405401 has 16 divisors (see below), whose sum is σ = 1156755264. Its totient is φ = 936702144.

The previous prime is 1044405361. The next prime is 1044405419. The reversal of 1044405401 is 1045044401.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1044405401 - 2⁶ = 1044405337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1044405301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558470 + ... + 560336.

It is an arithmetic number, because the mean of its divisors is an integer number (72297204).

Almost surely, 2^1044405401 is an apocalyptic number.

It is an amenable number.

1044405401 is a deficient number, since it is larger than the sum of its proper divisors (112349863).

1044405401 is a wasteful number, since it uses less digits than its factorization.

1044405401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080.

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

The square root of 1044405401 is about 32317.2616568917. The cubic root of 1044405401 is about 1014.5879570293.

Adding to 1044405401 its reverse (1045044401), we get a palindrome (2089449802).

The spelling of 1044405401 in words is "one billion, forty-four million, four hundred five thousand, four hundred one".