1044889309 has 8 divisors (see below), whose sum is σ = 1109119608. Its totient is φ = 980966400.

The previous prime is 1044889303. The next prime is 1044889319. The reversal of 1044889309 is 9039884401.

It can be written as a sum of positive squares in 4 ways, for example, as 654234084 + 390655225 = 25578^2 + 19765^2 .

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 1044889309 - 2⁵ = 1044889277 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 (1044889303) 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, 69822 + ... + 83455.

It is an arithmetic number, because the mean of its divisors is an integer number (138639951).

Almost surely, 2^1044889309 is an apocalyptic number.

It is an amenable number.

1044889309 is a deficient number, since it is larger than the sum of its proper divisors (64230299).

1044889309 is a wasteful number, since it uses less digits than its factorization.

1044889309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153695.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 1044889309 is about 32324.7476246915. The cubic root of 1044889309 is about 1014.7446303610.

The spelling of 1044889309 in words is "one billion, forty-four million, eight hundred eighty-nine thousand, three hundred nine".