1445090489 has 2 divisors, whose sum is σ = 1445090490. Its totient is φ = 1445090488.

The previous prime is 1445090447. The next prime is 1445090497. The reversal of 1445090489 is 9840905441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 873498025 + 571592464 = 29555^2 + 23908^2 .

It is an emirp because it is prime and its reverse (9840905441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1445090489 - 2²⁴ = 1428313273 is a prime.

It is not a weakly prime, because it can be changed into another prime (1445092489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722545244 + 722545245.

It is an arithmetic number, because the mean of its divisors is an integer number (722545245).

Almost surely, 2^1445090489 is an apocalyptic number.

It is an amenable number.

1445090489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1445090489 is an equidigital number, since it uses as much as digits as its factorization.

1445090489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 1445090489 is about 38014.3458315410. The cubic root of 1445090489 is about 1130.5723179642.

The spelling of 1445090489 in words is "one billion, four hundred forty-five million, ninety thousand, four hundred eighty-nine".