99201845 has 4 divisors (see below), whose sum is σ = 119042220. Its totient is φ = 79361472.

The previous prime is 99201827. The next prime is 99201857. The reversal of 99201845 is 54810299.

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 37075921 + 62125924 = 6089^2 + 7882^2 .

It is a cyclic number.

It is not a de Polignac number, because 99201845 - 2¹⁰ = 99200821 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 99201799 and 99201808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9920180 + ... + 9920189.

It is an arithmetic number, because the mean of its divisors is an integer number (29760555).

Almost surely, 2^99201845 is an apocalyptic number.

It is an amenable number.

99201845 is a deficient number, since it is larger than the sum of its proper divisors (19840375).

99201845 is a wasteful number, since it uses less digits than its factorization.

99201845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19840374.

The product of its (nonzero) digits is 25920, while the sum is 38.

The square root of 99201845 is about 9960.0122991892. The cubic root of 99201845 is about 462.9206807912.

The spelling of 99201845 in words is "ninety-nine million, two hundred one thousand, eight hundred forty-five".