99884971 has 4 divisors (see below), whose sum is σ = 100854832. Its totient is φ = 98915112.

The previous prime is 99884969. The next prime is 99884977. The reversal of 99884971 is 17948899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99884971 - 2¹ = 99884969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99884977) 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 3 ways as a sum of consecutive naturals, for example, 484776 + ... + 484981.

It is an arithmetic number, because the mean of its divisors is an integer number (25213708).

Almost surely, 2^99884971 is an apocalyptic number.

99884971 is a deficient number, since it is larger than the sum of its proper divisors (969861).

99884971 is a wasteful number, since it uses less digits than its factorization.

99884971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969860.

The product of its digits is 1306368, while the sum is 55.

The square root of 99884971 is about 9994.2468950892. The cubic root of 99884971 is about 463.9808426370.

The spelling of 99884971 in words is "ninety-nine million, eight hundred eighty-four thousand, nine hundred seventy-one".