1244430589 has 4 divisors (see below), whose sum is σ = 1246336956. Its totient is φ = 1242524224.

The previous prime is 1244430587. The next prime is 1244430601. The reversal of 1244430589 is 9850344421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9850344421 = 29 ⋅339667049.

It can be written as a sum of positive squares in 2 ways, for example, as 591219225 + 653211364 = 24315^2 + 25558^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244430589 - 2¹ = 1244430587 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1244430581) 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, 952204 + ... + 953509.

It is an arithmetic number, because the mean of its divisors is an integer number (311584239).

Almost surely, 2^1244430589 is an apocalyptic number.

It is an amenable number.

1244430589 is a deficient number, since it is larger than the sum of its proper divisors (1906367).

1244430589 is an equidigital number, since it uses as much as digits as its factorization.

1244430589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1906366.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1244430589 is about 35276.4877645153. The cubic root of 1244430589 is about 1075.6151054115.

The spelling of 1244430589 in words is "one billion, two hundred forty-four million, four hundred thirty thousand, five hundred eighty-nine".