99898801 has 4 divisors (see below), whose sum is σ = 99919204. Its totient is φ = 99878400.

The previous prime is 99898793. The next prime is 99898819. The reversal of 99898801 is 10889899.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 31091776 + 68807025 = 5576^2 + 8295^2 .

It is a 3-Lehmer number, since φ(99898801) divides (99898801-1)³.

It is a cyclic number.

It is not a de Polignac number, because 99898801 - 2³ = 99898793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99898901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2041 + ... + 14281.

It is an arithmetic number, because the mean of its divisors is an integer number (24979801).

It is a Poulet number, since it divides 2^99898800-1.

Almost surely, 2^99898801 is an apocalyptic number.

99898801 is the 8161-st pentagonal number.

It is an amenable number.

99898801 is a deficient number, since it is larger than the sum of its proper divisors (20403).

99898801 is a wasteful number, since it uses less digits than its factorization.

99898801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20402.

The product of its (nonzero) digits is 373248, while the sum is 52.

The square root of 99898801 is about 9994.9387691971. The cubic root of 99898801 is about 464.0022557981.

It can be divided in two parts, 998 and 98801, that added together give a palindrome (99799).

The spelling of 99898801 in words is "ninety-nine million, eight hundred ninety-eight thousand, eight hundred one".