1044312389 has 2 divisors, whose sum is σ = 1044312390. Its totient is φ = 1044312388.

The previous prime is 1044312343. The next prime is 1044312413. The reversal of 1044312389 is 9832134401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 860248900 + 184063489 = 29330^2 + 13567^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1044312389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1044312089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 522156194 + 522156195.

It is an arithmetic number, because the mean of its divisors is an integer number (522156195).

Almost surely, 2^1044312389 is an apocalyptic number.

It is an amenable number.

1044312389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1044312389 is an equidigital number, since it uses as much as digits as its factorization.

1044312389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 1044312389 is about 32315.8225796590. The cubic root of 1044312389 is about 1014.5578372896.

The spelling of 1044312389 in words is "one billion, forty-four million, three hundred twelve thousand, three hundred eighty-nine".