99870843 has 8 divisors (see below), whose sum is σ = 133959168. Its totient is φ = 66181544.

The previous prime is 99870833. The next prime is 99870857. The reversal of 99870843 is 34807899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99870843 - 2⁶ = 99870779 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99870792 and 99870801.

It is not an unprimeable number, because it can be changed into a prime (99870833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99171 + ... + 100172.

It is an arithmetic number, because the mean of its divisors is an integer number (16744896).

Almost surely, 2^99870843 is an apocalyptic number.

99870843 is a deficient number, since it is larger than the sum of its proper divisors (34088325).

99870843 is a wasteful number, since it uses less digits than its factorization.

99870843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199513.

The product of its (nonzero) digits is 435456, while the sum is 48.

The square root of 99870843 is about 9993.5400634610. The cubic root of 99870843 is about 463.9589660378.

The spelling of 99870843 in words is "ninety-nine million, eight hundred seventy thousand, eight hundred forty-three".