1144885 has 12 divisors (see below), whose sum is σ = 1598508. Its totient is φ = 784896.

The previous prime is 1144879. The next prime is 1144889. The reversal of 1144885 is 5884411.

It can be written as a sum of positive squares in 2 ways, for example, as 815409 + 329476 = 903^2 + 574^2 .

It is not a de Polignac number, because 1144885 - 2³ = 1144877 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1144889) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2092 + ... + 2581.

It is an arithmetic number, because the mean of its divisors is an integer number (133209).

2^1144885 is an apocalyptic number.

It is an amenable number.

1144885 is a deficient number, since it is larger than the sum of its proper divisors (453623).

1144885 is an equidigital number, since it uses as much as digits as its factorization.

1144885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4692 (or 4685 counting only the distinct ones).

The product of its digits is 5120, while the sum is 31.

The square root of 1144885 is about 1069.9929906312. The cubic root of 1144885 is about 104.6133930866.

The spelling of 1144885 in words is "one million, one hundred forty-four thousand, eight hundred eighty-five".