1144009 has 6 divisors (see below), whose sum is σ = 1207770. Its totient is φ = 1083456.

The previous prime is 1144007. The next prime is 1144019. The reversal of 1144009 is 9004411.

It can be written as a sum of positive squares in only one way, i.e., 1092025 + 51984 = 1045^2 + 228^2 .

It is not a de Polignac number, because 1144009 - 2¹ = 1144007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

1144009 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1144001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1224 + ... + 1945.

It is an arithmetic number, because the mean of its divisors is an integer number (201295).

2^1144009 is an apocalyptic number.

1144009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1144009 is a deficient number, since it is larger than the sum of its proper divisors (63761).

1144009 is an equidigital number, since it uses as much as digits as its factorization.

1144009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207 (or 3188 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1144009 is about 1069.5835638229. The cubic root of 1144009 is about 104.5867048995.

The spelling of 1144009 in words is "one million, one hundred forty-four thousand, nine".