1444051421 has 4 divisors (see below), whose sum is σ = 1444128000. Its totient is φ = 1443974844.

The previous prime is 1444051397. The next prime is 1444051423. The reversal of 1444051421 is 1241504441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444051421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444051423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12110 + ... + 55088.

It is an arithmetic number, because the mean of its divisors is an integer number (361032000).

Almost surely, 2^1444051421 is an apocalyptic number.

It is an amenable number.

1444051421 is a deficient number, since it is larger than the sum of its proper divisors (76579).

1444051421 is an equidigital number, since it uses as much as digits as its factorization.

1444051421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76578.

The product of its (nonzero) digits is 2560, while the sum is 26.

The square root of 1444051421 is about 38000.6765860820. The cubic root of 1444051421 is about 1130.3012799915.

Adding to 1444051421 its reverse (1241504441), we get a palindrome (2685555862).

The spelling of 1444051421 in words is "one billion, four hundred forty-four million, fifty-one thousand, four hundred twenty-one".