98891217 has 24 divisors (see below), whose sum is σ = 144967680. Its totient is φ = 64955520.

The previous prime is 98891207. The next prime is 98891251. The reversal of 98891217 is 71219889.

It is not a de Polignac number, because 98891217 - 2¹⁵ = 98858449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (98891207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 275284 + ... + 275642.

It is an arithmetic number, because the mean of its divisors is an integer number (6040320).

Almost surely, 2^98891217 is an apocalyptic number.

It is an amenable number.

98891217 is a deficient number, since it is larger than the sum of its proper divisors (46076463).

98891217 is a wasteful number, since it uses less digits than its factorization.

98891217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 730 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 98891217 is about 9944.4063171212. The cubic root of 98891217 is about 462.4369986743.

The spelling of 98891217 in words is "ninety-eight million, eight hundred ninety-one thousand, two hundred seventeen".