4444041421 has 4 divisors (see below), whose sum is σ = 4446235872. Its totient is φ = 4441846972.

The previous prime is 4444041397. The next prime is 4444041463. The reversal of 4444041421 is 1241404444.

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.

It is a cyclic number.

It is not a de Polignac number, because 4444041421 - 2⁵ = 4444041389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4444041421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4444041521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1094185 + ... + 1098238.

It is an arithmetic number, because the mean of its divisors is an integer number (1111558968).

Almost surely, 2^4444041421 is an apocalyptic number.

It is an amenable number.

4444041421 is a deficient number, since it is larger than the sum of its proper divisors (2194451).

4444041421 is a wasteful number, since it uses less digits than its factorization.

4444041421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2194450.

The product of its (nonzero) digits is 8192, while the sum is 28.

The square root of 4444041421 is about 66663.6439223060. The cubic root of 4444041421 is about 1644.0916843205.

Adding to 4444041421 its reverse (1241404444), we get a palindrome (5685445865).

The spelling of 4444041421 in words is "four billion, four hundred forty-four million, forty-one thousand, four hundred twenty-one".