1144889 has 2 divisors, whose sum is σ = 1144890. Its totient is φ = 1144888.

The previous prime is 1144879. The next prime is 1144901. The reversal of 1144889 is 9884411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1138489 + 6400 = 1067^2 + 80^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1144889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (1144879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572444 + 572445.

It is an arithmetic number, because the mean of its divisors is an integer number (572445).

2^1144889 is an apocalyptic number.

It is an amenable number.

1144889 is a deficient number, since it is larger than the sum of its proper divisors (1).

1144889 is an equidigital number, since it uses as much as digits as its factorization.

1144889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 35.

The square root of 1144889 is about 1069.9948598007. The cubic root of 1144889 is about 104.6135149192.

The spelling of 1144889 in words is "one million, one hundred forty-four thousand, eight hundred eighty-nine".