44000040421 has 2 divisors, whose sum is σ = 44000040422. Its totient is φ = 44000040420.

The previous prime is 44000040377. The next prime is 44000040437. The reversal of 44000040421 is 12404000044.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41988517921 + 2011522500 = 204911^2 + 44850^2 .

It is a cyclic number.

It is not a de Polignac number, because 44000040421 - 2²³ = 43991651813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44000046421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22000020210 + 22000020211.

It is an arithmetic number, because the mean of its divisors is an integer number (22000020211).

Almost surely, 2^44000040421 is an apocalyptic number.

It is an amenable number.

44000040421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44000040421 is an equidigital number, since it uses as much as digits as its factorization.

44000040421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 44000040421 its reverse (12404000044), we get a palindrome (56404040465).

The spelling of 44000040421 in words is "forty-four billion, forty thousand, four hundred twenty-one".