1444401421 has 8 divisors (see below), whose sum is σ = 1472429664. Its totient is φ = 1416402000.

The previous prime is 1444401407. The next prime is 1444401443. The reversal of 1444401421 is 1241044441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1444401421 - 2²³ = 1436012813 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 (1444401461) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113250 + ... + 125356.

It is an arithmetic number, because the mean of its divisors is an integer number (184053708).

Almost surely, 2^1444401421 is an apocalyptic number.

It is an amenable number.

1444401421 is a deficient number, since it is larger than the sum of its proper divisors (28028243).

1444401421 is a wasteful number, since it uses less digits than its factorization.

1444401421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14411.

The product of its (nonzero) digits is 2048, while the sum is 25.

The square root of 1444401421 is about 38005.2814882353. The cubic root of 1444401421 is about 1130.3925910268.

Adding to 1444401421 its reverse (1241044441), we get a palindrome (2685445862).

The spelling of 1444401421 in words is "one billion, four hundred forty-four million, four hundred one thousand, four hundred twenty-one".