1144388 has 24 divisors (see below), whose sum is σ = 2389632. Its totient is φ = 468864.

The previous prime is 1144379. The next prime is 1144393. The reversal of 1144388 is 8834411.

It is a self number, because there is not a number n which added to its sum of digits gives 1144388.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245 + ... + 1532.

It is an arithmetic number, because the mean of its divisors is an integer number (99568).

2^1144388 is an apocalyptic number.

It is an amenable number.

1144388 is an abundant number, since it is smaller than the sum of its proper divisors (1245244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1144388 is a wasteful number, since it uses less digits than its factorization.

1144388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1811 (or 1809 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 1144388 is about 1069.7607209091. The cubic root of 1144388 is about 104.5982531725.

Adding to 1144388 its reverse (8834411), we get a palindrome (9978799).

The spelling of 1144388 in words is "one million, one hundred forty-four thousand, three hundred eighty-eight".