1144487 has 4 divisors (see below), whose sum is σ = 1158360. Its totient is φ = 1130616.

The previous prime is 1144483. The next prime is 1144499. The reversal of 1144487 is 7844411.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1144487 - 2² = 1144483 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 (1144483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6812 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (289590).

2^1144487 is an apocalyptic number.

1144487 is a deficient number, since it is larger than the sum of its proper divisors (13873).

1144487 is an equidigital number, since it uses as much as digits as its factorization.

1144487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13872.

The product of its digits is 3584, while the sum is 29.

The square root of 1144487 is about 1069.8069919383. The cubic root of 1144487 is about 104.6012693198.

Adding to 1144487 its reverse (7844411), we get a palindrome (8988898).

The spelling of 1144487 in words is "one million, one hundred forty-four thousand, four hundred eighty-seven".