4144221437 has 2 divisors, whose sum is σ = 4144221438. Its totient is φ = 4144221436.

The previous prime is 4144221383. The next prime is 4144221451. The reversal of 4144221437 is 7341224414.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3979843396 + 164378041 = 63086^2 + 12821^2 .

It is a cyclic number.

It is not a de Polignac number, because 4144221437 - 2¹⁰ = 4144220413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4144221337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2072110718 + 2072110719.

It is an arithmetic number, because the mean of its divisors is an integer number (2072110719).

Almost surely, 2^4144221437 is an apocalyptic number.

It is an amenable number.

4144221437 is a deficient number, since it is larger than the sum of its proper divisors (1).

4144221437 is an equidigital number, since it uses as much as digits as its factorization.

4144221437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21504, while the sum is 32.

The square root of 4144221437 is about 64375.6276629595. The cubic root of 4144221437 is about 1606.2543530049.

The spelling of 4144221437 in words is "four billion, one hundred forty-four million, two hundred twenty-one thousand, four hundred thirty-seven".