44200019989 has 2 divisors, whose sum is σ = 44200019990. Its totient is φ = 44200019988.

The previous prime is 44200019987. The next prime is 44200020041. The reversal of 44200019989 is 98991000244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27214111089 + 16985908900 = 164967^2 + 130330^2 .

It is a cyclic number.

It is not a de Polignac number, because 44200019989 - 2¹ = 44200019987 is a prime.

Together with 44200019987, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44200019987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22100009994 + 22100009995.

It is an arithmetic number, because the mean of its divisors is an integer number (22100009995).

Almost surely, 2^44200019989 is an apocalyptic number.

It is an amenable number.

44200019989 is a deficient number, since it is larger than the sum of its proper divisors (1).

44200019989 is an equidigital number, since it uses as much as digits as its factorization.

44200019989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 46.

The spelling of 44200019989 in words is "forty-four billion, two hundred million, nineteen thousand, nine hundred eighty-nine".