898789898989 has 2 divisors, whose sum is σ = 898789898990. Its totient is φ = 898789898988.

The previous prime is 898789898987. The next prime is 898789899053. The reversal of 898789898989 is 989898987898.

898789898989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

898789898989 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 591796334089 + 306993564900 = 769283^2 + 554070^2 .

It is a cyclic number.

It is not a de Polignac number, because 898789898989 - 2¹ = 898789898987 is a prime.

Together with 898789898987, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 898789898894 and 898789898903.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (898789898983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449394949494 + 449394949495.

It is an arithmetic number, because the mean of its divisors is an integer number (449394949495).

Almost surely, 2^898789898989 is an apocalyptic number.

It is an amenable number.

898789898989 is a deficient number, since it is larger than the sum of its proper divisors (1).

898789898989 is an equidigital number, since it uses as much as digits as its factorization.

898789898989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108355387392, while the sum is 100.

The spelling of 898789898989 in words is "eight hundred ninety-eight billion, seven hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-nine".