1044223621 has 16 divisors (see below), whose sum is σ = 1256327424. Its totient is φ = 848542464.

The previous prime is 1044223573. The next prime is 1044223643. The reversal of 1044223621 is 1263224401.

It is a happy number.

It is not a de Polignac number, because 1044223621 - 2¹¹ = 1044221573 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 (1044223651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10506 + ... + 46891.

It is an arithmetic number, because the mean of its divisors is an integer number (78520464).

Almost surely, 2^1044223621 is an apocalyptic number.

It is an amenable number.

1044223621 is a deficient number, since it is larger than the sum of its proper divisors (212103803).

1044223621 is a wasteful number, since it uses less digits than its factorization.

1044223621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57540.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1044223621 is about 32314.4491056246. The cubic root of 1044223621 is about 1014.5290902011.

The spelling of 1044223621 in words is "one billion, forty-four million, two hundred twenty-three thousand, six hundred twenty-one".