1444342021 has 2 divisors, whose sum is σ = 1444342022. Its totient is φ = 1444342020.

The previous prime is 1444341959. The next prime is 1444342037. The reversal of 1444342021 is 1202434441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955489921 + 488852100 = 30911^2 + 22110^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444342021 - 2¹¹ = 1444339973 is a prime.

It is a super-2 number, since 2×1444342021² = 4172247747252728882, which contains 22 as substring.

It is the 38005-th Hogben number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444342051) by changing a digit.

It is a nontrivial repunit in base 38004.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722171010 + 722171011.

It is an arithmetic number, because the mean of its divisors is an integer number (722171011).

Almost surely, 2^1444342021 is an apocalyptic number.

It is an amenable number.

1444342021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444342021 is an equidigital number, since it uses as much as digits as its factorization.

1444342021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3072, while the sum is 25.

The square root of 1444342021 is about 38004.5000098673. The cubic root of 1444342021 is about 1130.3770952791.

Adding to 1444342021 its reverse (1202434441), we get a palindrome (2646776462).

The spelling of 1444342021 in words is "one billion, four hundred forty-four million, three hundred forty-two thousand, twenty-one".