44898219721 has 2 divisors, whose sum is σ = 44898219722. Its totient is φ = 44898219720.

The previous prime is 44898219623. The next prime is 44898219727. The reversal of 44898219721 is 12791289844.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24826414096 + 20071805625 = 157564^2 + 141675^2 .

It is a cyclic number.

It is not a de Polignac number, because 44898219721 - 2⁷ = 44898219593 is a prime.

It is a super-3 number, since 3×44898219721³ (a number of 33 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (44898219727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22449109860 + 22449109861.

It is an arithmetic number, because the mean of its divisors is an integer number (22449109861).

Almost surely, 2^44898219721 is an apocalyptic number.

It is an amenable number.

44898219721 is a deficient number, since it is larger than the sum of its proper divisors (1).

44898219721 is an equidigital number, since it uses as much as digits as its factorization.

44898219721 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2322432, while the sum is 55.

The spelling of 44898219721 in words is "forty-four billion, eight hundred ninety-eight million, two hundred nineteen thousand, seven hundred twenty-one".