89898987671 has 2 divisors, whose sum is σ = 89898987672. Its totient is φ = 89898987670.

The previous prime is 89898987649. The next prime is 89898987701. The reversal of 89898987671 is 17678989898.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89898987671 is a prime.

It is a super-2 number, since 2×89898987671² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89898987601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44949493835 + 44949493836.

It is an arithmetic number, because the mean of its divisors is an integer number (44949493836).

Almost surely, 2^89898987671 is an apocalyptic number.

89898987671 is a deficient number, since it is larger than the sum of its proper divisors (1).

89898987671 is an equidigital number, since it uses as much as digits as its factorization.

89898987671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 877879296, while the sum is 80.

The spelling of 89898987671 in words is "eighty-nine billion, eight hundred ninety-eight million, nine hundred eighty-seven thousand, six hundred seventy-one".