1444391 has 8 divisors (see below), whose sum is σ = 1568784. Its totient is φ = 1321920.

The previous prime is 1444309. The next prime is 1444411. The reversal of 1444391 is 1934441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444391 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444291) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1376 + ... + 2186.

It is an arithmetic number, because the mean of its divisors is an integer number (196098).

2^1444391 is an apocalyptic number.

1444391 is a deficient number, since it is larger than the sum of its proper divisors (124393).

1444391 is a wasteful number, since it uses less digits than its factorization.

1444391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961.

The product of its digits is 1728, while the sum is 26.

The square root of 1444391 is about 1201.8281907161. The cubic root of 1444391 is about 113.0389872519.

The spelling of 1444391 in words is "one million, four hundred forty-four thousand, three hundred ninety-one".