99181067 has 6 divisors (see below), whose sum is σ = 99768924. Its totient is φ = 98594760.

The previous prime is 99181063. The next prime is 99181079. The reversal of 99181067 is 76018199.

It is a happy number.

It is not a de Polignac number, because 99181067 - 2² = 99181063 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99181063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 149717 + ... + 150377.

It is an arithmetic number, because the mean of its divisors is an integer number (16628154).

Almost surely, 2^99181067 is an apocalyptic number.

99181067 is a deficient number, since it is larger than the sum of its proper divisors (587857).

99181067 is an frugal number, since it uses more digits than its factorization.

99181067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1549 (or 888 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 99181067 is about 9958.9691735641. The cubic root of 99181067 is about 462.8883586856. Note that the first 3 decimals are identical.

The spelling of 99181067 in words is "ninety-nine million, one hundred eighty-one thousand, sixty-seven".