99986271 has 32 divisors (see below), whose sum is σ = 168345600. Its totient is φ = 51274080.

The previous prime is 99986269. The next prime is 99986273. The reversal of 99986271 is 17268999.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (99986269) and next prime (99986273).

It is not a de Polignac number, because 99986271 - 2¹ = 99986269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99986273) 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 in 31 ways as a sum of consecutive naturals, for example, 15510 + ... + 20988.

It is an arithmetic number, because the mean of its divisors is an integer number (5260800).

Almost surely, 2^99986271 is an apocalyptic number.

99986271 is a deficient number, since it is larger than the sum of its proper divisors (68359329).

99986271 is a wasteful number, since it uses less digits than its factorization.

99986271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5579.

The product of its digits is 489888, while the sum is 51.

The square root of 99986271 is about 9999.3135264377. The cubic root of 99986271 is about 464.1376409314.

The spelling of 99986271 in words is "ninety-nine million, nine hundred eighty-six thousand, two hundred seventy-one".