1144539 has 18 divisors (see below), whose sum is σ = 1818908. Its totient is φ = 693000.

The previous prime is 1144537. The next prime is 1144573. The reversal of 1144539 is 9354411.

It is not a de Polignac number, because 1144539 - 2¹ = 1144537 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1144537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 564 + ... + 1614.

2^1144539 is an apocalyptic number.

1144539 is a deficient number, since it is larger than the sum of its proper divisors (674369).

1144539 is a wasteful number, since it uses less digits than its factorization.

1144539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1079 (or 1065 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 1144539 is about 1069.8312951115. The cubic root of 1144539 is about 104.6028534892.

It can be divided in two parts, 1144 and 539, that multiplied together give a palindrome (616616).

The spelling of 1144539 in words is "one million, one hundred forty-four thousand, five hundred thirty-nine".