898989898987 has 2 divisors, whose sum is σ = 898989898988. Its totient is φ = 898989898986.

The previous prime is 898989898969. The next prime is 898989899033. The reversal of 898989898987 is 789898989898.

898989898987 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-898989898987 is a prime.

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 = 898989898892 and 898989898901.

It is not a weakly prime, because it can be changed into another prime (898989848987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 449494949493 + 449494949494.

It is an arithmetic number, because the mean of its divisors is an integer number (449494949494).

Almost surely, 2^898989898987 is an apocalyptic number.

898989898987 is a deficient number, since it is larger than the sum of its proper divisors (1).

898989898987 is an equidigital number, since it uses as much as digits as its factorization.

898989898987 is an odious number, because the sum of its binary digits is odd.

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

The spelling of 898989898987 in words is "eight hundred ninety-eight billion, nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred eighty-seven".