99969 has 8 divisors (see below), whose sum is σ = 136320. Its totient is φ = 65136.
The previous prime is 99961. The next prime is 99971. The reversal of 99969 is 96999.
99969 is nontrivially palindromic in base 16.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 99969 - 23 = 99961 is a prime.
It is a super-2 number, since 2×999692 = 19987601922, which contains 22 as substring.
It is a plaindrome in base 13.
It is a self number, because there is not a number n which added to its sum of digits gives 99969.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 99969.
It is not an unprimeable number, because it can be changed into a prime (99961) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214 + ... + 495.
It is an arithmetic number, because the mean of its divisors is an integer number (17040).
299969 is an apocalyptic number.
It is an amenable number.
99969 is a deficient number, since it is larger than the sum of its proper divisors (36351).
99969 is a wasteful number, since it uses less digits than its factorization.
99969 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 759.
The product of its digits is 39366, while the sum is 42.
The square root of 99969 is about 316.1787469138. The cubic root of 99969 is about 46.4110915320.
The spelling of 99969 in words is "ninety-nine thousand, nine hundred sixty-nine".
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