2239427912989 has 2 divisors, whose sum is σ = 2239427912990. Its totient is φ = 2239427912988.

The previous prime is 2239427912933. The next prime is 2239427913031. The reversal of 2239427912989 is 9892197249322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2194871880100 + 44556032889 = 1481510^2 + 211083^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2239427912989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2239427912389) 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, 1119713956494 + 1119713956495.

It is an arithmetic number, because the mean of its divisors is an integer number (1119713956495).

Almost surely, 2^{2239427912989} is an apocalyptic number.

It is an amenable number.

2239427912989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239427912989 is an equidigital number, since it uses as much as digits as its factorization.

2239427912989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 70543872, while the sum is 67.

The spelling of 2239427912989 in words is "two trillion, two hundred thirty-nine billion, four hundred twenty-seven million, nine hundred twelve thousand, nine hundred eighty-nine".