1144899 has 24 divisors (see below), whose sum is σ = 2003040. Its totient is φ = 615168.

The previous prime is 1144889. The next prime is 1144901. The reversal of 1144899 is 9984411.

It is a Cunningham number, because it is equal to 1070²-1.

It is not a de Polignac number, because 1144899 - 2⁵ = 1144867 is a prime.

It is a D-number.

1144899 is a lucky number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (1144879) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 537 + ... + 1605.

It is an arithmetic number, because the mean of its divisors is an integer number (83460).

2^1144899 is an apocalyptic number.

1144899 is a deficient number, since it is larger than the sum of its proper divisors (858141).

1144899 is a wasteful number, since it uses less digits than its factorization.

1144899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1096 counting only the distinct ones).

The product of its digits is 10368, while the sum is 36.

The square root of 1144899 is about 1069.9995327102. Note that the first 3 decimals coincide. The cubic root of 1144899 is about 104.6138194996.

The spelling of 1144899 in words is "one million, one hundred forty-four thousand, eight hundred ninety-nine".