1444134421 has 2 divisors, whose sum is σ = 1444134422. Its totient is φ = 1444134420.

The previous prime is 1444134401. The next prime is 1444134451. The reversal of 1444134421 is 1244314441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1270922500 + 173211921 = 35650^2 + 13161^2 .

It is an emirp because it is prime and its reverse (1244314441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1444134421 - 2⁵ = 1444134389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1444134421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444134401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722067210 + 722067211.

It is an arithmetic number, because the mean of its divisors is an integer number (722067211).

Almost surely, 2^1444134421 is an apocalyptic number.

It is an amenable number.

1444134421 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444134421 is an equidigital number, since it uses as much as digits as its factorization.

1444134421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6144, while the sum is 28.

The square root of 1444134421 is about 38001.7686562086. The cubic root of 1444134421 is about 1130.3229350858.

Adding to 1444134421 its reverse (1244314441), we get a palindrome (2688448862).

The spelling of 1444134421 in words is "one billion, four hundred forty-four million, one hundred thirty-four thousand, four hundred twenty-one".