444898337921 has 2 divisors, whose sum is σ = 444898337922. Its totient is φ = 444898337920.

The previous prime is 444898337887. The next prime is 444898337951. The reversal of 444898337921 is 129733898444.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 344592480400 + 100305857521 = 587020^2 + 316711^2 .

It is a cyclic number.

It is not a de Polignac number, because 444898337921 - 2⁶ = 444898337857 is a prime.

It is not a weakly prime, because it can be changed into another prime (444898337951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222449168960 + 222449168961.

It is an arithmetic number, because the mean of its divisors is an integer number (222449168961).

Almost surely, 2^444898337921 is an apocalyptic number.

It is an amenable number.

444898337921 is a deficient number, since it is larger than the sum of its proper divisors (1).

444898337921 is an equidigital number, since it uses as much as digits as its factorization.

444898337921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41803776, while the sum is 62.

The spelling of 444898337921 in words is "four hundred forty-four billion, eight hundred ninety-eight million, three hundred thirty-seven thousand, nine hundred twenty-one".