44400444421 has 2 divisors, whose sum is σ = 44400444422. Its totient is φ = 44400444420.

The previous prime is 44400444383. The next prime is 44400444427. The reversal of 44400444421 is 12444400444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29528641921 + 14871802500 = 171839^2 + 121950^2 .

It is a cyclic number.

It is not a de Polignac number, because 44400444421 - 2¹⁹ = 44399920133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44400444427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22200222210 + 22200222211.

It is an arithmetic number, because the mean of its divisors is an integer number (22200222211).

Almost surely, 2^44400444421 is an apocalyptic number.

It is an amenable number.

44400444421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44400444421 is an equidigital number, since it uses as much as digits as its factorization.

44400444421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 44400444421 its reverse (12444400444), we get a palindrome (56844844865).

The spelling of 44400444421 in words is "forty-four billion, four hundred million, four hundred forty-four thousand, four hundred twenty-one".