1044403421 has 4 divisors (see below), whose sum is σ = 1044533952. Its totient is φ = 1044272892.

The previous prime is 1044403411. The next prime is 1044403439. The reversal of 1044403421 is 1243044401.

It is a happy number.

1044403421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1044403421 - 2¹⁰ = 1044402397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1044403411) 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, 52421 + ... + 69546.

It is an arithmetic number, because the mean of its divisors is an integer number (261133488).

Almost surely, 2^1044403421 is an apocalyptic number.

It is an amenable number.

1044403421 is a deficient number, since it is larger than the sum of its proper divisors (130531).

1044403421 is an equidigital number, since it uses as much as digits as its factorization.

1044403421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130530.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 1044403421 is about 32317.2310230935. The cubic root of 1044403421 is about 1014.5873158717.

Adding to 1044403421 its reverse (1243044401), we get a palindrome (2287447822).

The spelling of 1044403421 in words is "one billion, forty-four million, four hundred three thousand, four hundred twenty-one".