4444140621 has 4 divisors (see below), whose sum is σ = 5925520832. Its totient is φ = 2962760412.

The previous prime is 4444140541. The next prime is 4444140637. The reversal of 4444140621 is 1260414444.

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 de Polignac number, because none of the positive numbers 2^k-4444140621 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 (4444140121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 740690101 + ... + 740690106.

It is an arithmetic number, because the mean of its divisors is an integer number (1481380208).

Almost surely, 2^4444140621 is an apocalyptic number.

It is an amenable number.

4444140621 is a deficient number, since it is larger than the sum of its proper divisors (1481380211).

4444140621 is a wasteful number, since it uses less digits than its factorization.

4444140621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1481380210.

The product of its (nonzero) digits is 12288, while the sum is 30.

The square root of 4444140621 is about 66664.3879518893. The cubic root of 4444140621 is about 1644.1039173809.

The spelling of 4444140621 in words is "four billion, four hundred forty-four million, one hundred forty thousand, six hundred twenty-one".