99897201 has 12 divisors (see below), whose sum is σ = 146450512. Its totient is φ = 65603736.

The previous prime is 99897191. The next prime is 99897227. The reversal of 99897201 is 10279899.

It is not a de Polignac number, because 99897201 - 2⁵ = 99897169 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99897241) 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, 82231 + ... + 83436.

Almost surely, 2^99897201 is an apocalyptic number.

It is an amenable number.

99897201 is a deficient number, since it is larger than the sum of its proper divisors (46553311).

99897201 is a wasteful number, since it uses less digits than its factorization.

99897201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165740 (or 165737 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 45.

The square root of 99897201 is about 9994.8587283663. The cubic root of 99897201 is about 463.9997785993. Note that the first 3 decimals are identical.

The spelling of 99897201 in words is "ninety-nine million, eight hundred ninety-seven thousand, two hundred one".