1444168397 has 16 divisors (see below), whose sum is σ = 1754563200. Its totient is φ = 1161086400.

The previous prime is 1444168391. The next prime is 1444168399. The reversal of 1444168397 is 7938614441.

It is a cyclic number.

It is not a de Polignac number, because 1444168397 - 2¹⁸ = 1443906253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444168391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40322 + ... + 67187.

It is an arithmetic number, because the mean of its divisors is an integer number (109660200).

Almost surely, 2^1444168397 is an apocalyptic number.

It is an amenable number.

1444168397 is a deficient number, since it is larger than the sum of its proper divisors (310394803).

1444168397 is a wasteful number, since it uses less digits than its factorization.

1444168397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107636.

The product of its digits is 580608, while the sum is 47.

The square root of 1444168397 is about 38002.2156854044. The cubic root of 1444168397 is about 1130.3317993462.

The spelling of 1444168397 in words is "one billion, four hundred forty-four million, one hundred sixty-eight thousand, three hundred ninety-seven".