1444340421 has 6 divisors (see below), whose sum is σ = 2086269510. Its totient is φ = 962893608.

The previous prime is 1444340419. The next prime is 1444340431. The reversal of 1444340421 is 1240434441.

It can be written as a sum of positive squares in only one way, i.e., 1442936196 + 1404225 = 37986^2 + 1185^2 .

It is not a de Polignac number, because 1444340421 - 2¹ = 1444340419 is a prime.

It is a super-2 number, since 2×1444340421² = 4172238503468914482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444340431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 80241126 + ... + 80241143.

It is an arithmetic number, because the mean of its divisors is an integer number (347711585).

Almost surely, 2^1444340421 is an apocalyptic number.

It is an amenable number.

1444340421 is a deficient number, since it is larger than the sum of its proper divisors (641929089).

1444340421 is a wasteful number, since it uses less digits than its factorization.

1444340421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160482275 (or 160482272 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1444340421 is about 38004.4789597226. The cubic root of 1444340421 is about 1130.3766778793.

Adding to 1444340421 its reverse (1240434441), we get a palindrome (2684774862).

The spelling of 1444340421 in words is "one billion, four hundred forty-four million, three hundred forty thousand, four hundred twenty-one".