89871617898 has 24 divisors (see below), whose sum is σ = 195424816548. Its totient is φ = 29849055552.

The previous prime is 89871617893. The next prime is 89871617911.

89871617898 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 67978568529 + 21893049369 = 260727^2 + 147963^2 .

It is a super-2 number, since 2×89871617898² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (89871617893) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9007411 + ... + 9017382.

Almost surely, 2^89871617898 is an apocalyptic number.

89871617898 is an abundant number, since it is smaller than the sum of its proper divisors (105553198650).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89871617898 is a wasteful number, since it uses less digits than its factorization.

89871617898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18025078 (or 18025075 counting only the distinct ones).

The product of its digits is 97542144, while the sum is 72.

The spelling of 89871617898 in words is "eighty-nine billion, eight hundred seventy-one million, six hundred seventeen thousand, eight hundred ninety-eight".