889741998449 has 2 divisors, whose sum is σ = 889741998450. Its totient is φ = 889741998448.

The previous prime is 889741998433. The next prime is 889741998479. The reversal of 889741998449 is 944899147988.

889741998449 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 475469548849 + 414272449600 = 689543^2 + 643640^2 .

It is a cyclic number.

It is not a de Polignac number, because 889741998449 - 2⁴ = 889741998433 is a prime.

It is not a weakly prime, because it can be changed into another prime (889741998479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 444870999224 + 444870999225.

It is an arithmetic number, because the mean of its divisors is an integer number (444870999225).

Almost surely, 2^889741998449 is an apocalyptic number.

It is an amenable number.

889741998449 is a deficient number, since it is larger than the sum of its proper divisors (1).

889741998449 is an equidigital number, since it uses as much as digits as its factorization.

889741998449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1504935936, while the sum is 80.

The spelling of 889741998449 in words is "eight hundred eighty-nine billion, seven hundred forty-one million, nine hundred ninety-eight thousand, four hundred forty-nine".