99870807 has 16 divisors (see below), whose sum is σ = 142709760. Its totient is φ = 61962912.

The previous prime is 99870787. The next prime is 99870833. The reversal of 99870807 is 70807899.

It is not a de Polignac number, because 99870807 - 2⁷ = 99870679 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99870857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17007 + ... + 22112.

It is an arithmetic number, because the mean of its divisors is an integer number (8919360).

Almost surely, 2^99870807 is an apocalyptic number.

99870807 is a deficient number, since it is larger than the sum of its proper divisors (42838953).

99870807 is a wasteful number, since it uses less digits than its factorization.

99870807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39182.

The product of its (nonzero) digits is 254016, while the sum is 48.

The square root of 99870807 is about 9993.5382622973. The cubic root of 99870807 is about 463.9589102907.

The spelling of 99870807 in words is "ninety-nine million, eight hundred seventy thousand, eight hundred seven".