1144489 has 4 divisors (see below), whose sum is σ = 1181440. Its totient is φ = 1107540.

The previous prime is 1144483. The next prime is 1144499. The reversal of 1144489 is 9844411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 9844411 = 17 ⋅579083.

It is a cyclic number.

It is not a de Polignac number, because 1144489 - 2⁹ = 1143977 is a prime.

It is a super-2 number, since 2×1144489² = 2619710142242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 36919 = 1144489 / (1 + 1 + 4 + 4 + 4 + 8 + 9).

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1144489.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18429 + ... + 18490.

It is an arithmetic number, because the mean of its divisors is an integer number (295360).

2^1144489 is an apocalyptic number.

It is an amenable number.

1144489 is a deficient number, since it is larger than the sum of its proper divisors (36951).

1144489 is an equidigital number, since it uses as much as digits as its factorization.

1144489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36950.

The product of its digits is 4608, while the sum is 31.

The square root of 1144489 is about 1069.8079266859. The cubic root of 1144489 is about 104.6013302503.

The spelling of 1144489 in words is "one million, one hundred forty-four thousand, four hundred eighty-nine".