99870167 has 2 divisors, whose sum is σ = 99870168. Its totient is φ = 99870166.

The previous prime is 99870149. The next prime is 99870181. The reversal of 99870167 is 76107899.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99870167 - 2¹⁸ = 99608023 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99870187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49935083 + 49935084.

It is an arithmetic number, because the mean of its divisors is an integer number (49935084).

Almost surely, 2^99870167 is an apocalyptic number.

99870167 is a deficient number, since it is larger than the sum of its proper divisors (1).

99870167 is an equidigital number, since it uses as much as digits as its factorization.

99870167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 190512, while the sum is 47.

The square root of 99870167 is about 9993.5062415551. The cubic root of 99870167 is about 463.9579192292.

The spelling of 99870167 in words is "ninety-nine million, eight hundred seventy thousand, one hundred sixty-seven".