99986541 has 4 divisors (see below), whose sum is σ = 133315392. Its totient is φ = 66657692.

The previous prime is 99986539. The next prime is 99986597. The reversal of 99986541 is 14568999.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 99986541 - 2¹ = 99986539 is a prime.

It is a super-2 number, since 2×99986541² = 19994616762289362, which contains 22 as substring.

It is a Curzon number.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99986521) 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, 16664421 + ... + 16664426.

It is an arithmetic number, because the mean of its divisors is an integer number (33328848).

Almost surely, 2^99986541 is an apocalyptic number.

It is an amenable number.

99986541 is a deficient number, since it is larger than the sum of its proper divisors (33328851).

99986541 is a wasteful number, since it uses less digits than its factorization.

99986541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33328850.

The product of its digits is 699840, while the sum is 51.

The square root of 99986541 is about 9999.3270273554. The cubic root of 99986541 is about 464.1380587123.

The spelling of 99986541 in words is "ninety-nine million, nine hundred eighty-six thousand, five hundred forty-one".