1444989 has 32 divisors (see below), whose sum is σ = 2437120. Its totient is φ = 741312.

The previous prime is 1444981. The next prime is 1444999. The reversal of 1444989 is 9894441.

It is not a de Polignac number, because 1444989 - 2³ = 1444981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18252 + ... + 18330.

It is an arithmetic number, because the mean of its divisors is an integer number (76160).

2^1444989 is an apocalyptic number.

It is an amenable number.

1444989 is a deficient number, since it is larger than the sum of its proper divisors (992131).

1444989 is a wasteful number, since it uses less digits than its factorization.

1444989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169.

The product of its digits is 41472, while the sum is 39.

The square root of 1444989 is about 1202.0769526116. The cubic root of 1444989 is about 113.0545850570.

The spelling of 1444989 in words is "one million, four hundred forty-four thousand, nine hundred eighty-nine".