1244889 has 24 divisors (see below), whose sum is σ = 1921920. Its totient is φ = 804816.

The previous prime is 1244879. The next prime is 1244909. The reversal of 1244889 is 9884421.

It is not a de Polignac number, because 1244889 - 2⁵ = 1244857 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

1244889 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 (1244819) 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, 11367 + ... + 11475.

It is an arithmetic number, because the mean of its divisors is an integer number (80080).

2^1244889 is an apocalyptic number.

It is an amenable number.

1244889 is a deficient number, since it is larger than the sum of its proper divisors (677031).

1244889 is an equidigital number, since it uses as much as digits as its factorization.

1244889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171 (or 159 counting only the distinct ones).

The product of its digits is 18432, while the sum is 36.

The square root of 1244889 is about 1115.7459388230. The cubic root of 1244889 is about 107.5747164006.

The spelling of 1244889 in words is "one million, two hundred forty-four thousand, eight hundred eighty-nine".