1144569 has 4 divisors (see below), whose sum is σ = 1526096. Its totient is φ = 763044.

The previous prime is 1144537. The next prime is 1144573. The reversal of 1144569 is 9654411.

It is a happy number.

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.

It is not a de Polignac number, because 1144569 - 2⁵ = 1144537 is a prime.

It is a super-2 number, since 2×1144569² = 2620076391522, which contains 22 as substring.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1144519) 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 3 ways as a sum of consecutive naturals, for example, 190759 + ... + 190764.

It is an arithmetic number, because the mean of its divisors is an integer number (381524).

2^1144569 is an apocalyptic number.

It is an amenable number.

1144569 is a deficient number, since it is larger than the sum of its proper divisors (381527).

1144569 is an equidigital number, since it uses as much as digits as its factorization.

1144569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381526.

The product of its digits is 4320, while the sum is 30.

The square root of 1144569 is about 1069.8453159219. The cubic root of 1144569 is about 104.6037674112.

The spelling of 1144569 in words is "one million, one hundred forty-four thousand, five hundred sixty-nine".