1440189 has 12 divisors (see below), whose sum is σ = 2202876. Its totient is φ = 903552.

The previous prime is 1440119. The next prime is 1440203. The reversal of 1440189 is 9810441.

It can be written as a sum of positive squares in 2 ways, for example, as 1340964 + 99225 = 1158^2 + 315^2 .

It is not a de Polignac number, because 1440189 - 2¹² = 1436093 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440119) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4554 + ... + 4859.

It is an arithmetic number, because the mean of its divisors is an integer number (183573).

2^1440189 is an apocalyptic number.

It is an amenable number.

1440189 is a deficient number, since it is larger than the sum of its proper divisors (762687).

1440189 is a wasteful number, since it uses less digits than its factorization.

1440189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9436 (or 9433 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 1440189 is about 1200.0787474162. The cubic root of 1440189 is about 112.9292636887.

The spelling of 1440189 in words is "one million, four hundred forty thousand, one hundred eighty-nine".