6444121 has 2 divisors, whose sum is σ = 6444122. Its totient is φ = 6444120.

The previous prime is 6444083. The next prime is 6444161. The reversal of 6444121 is 1214446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5588496 + 855625 = 2364^2 + 925^2 .

It is a cyclic number.

It is not a de Polignac number, because 6444121 - 2¹⁹ = 5919833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6444092 and 6444101.

It is not a weakly prime, because it can be changed into another prime (6444161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3222060 + 3222061.

It is an arithmetic number, because the mean of its divisors is an integer number (3222061).

Almost surely, 2^6444121 is an apocalyptic number.

It is an amenable number.

6444121 is a deficient number, since it is larger than the sum of its proper divisors (1).

6444121 is an equidigital number, since it uses as much as digits as its factorization.

6444121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 768, while the sum is 22.

The square root of 6444121 is about 2538.5273289843. The cubic root of 6444121 is about 186.0892256998.

Adding to 6444121 its reverse (1214446), we get a palindrome (7658567).

The spelling of 6444121 in words is "six million, four hundred forty-four thousand, one hundred twenty-one".