99960005 has 4 divisors (see below), whose sum is σ = 119952012.
Its totient is φ = 79968000.
The previous prime is 99959999. The next prime is 99960011. The reversal of 99960005 is 50006999.
It can be divided in two parts, 999 and 60005, that multiplied together give a palindrome (59944995).
It is a Cunningham number, because it is equal to 99982+1.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (99959999) and next prime (99960011).
It can be written as a sum of positive squares in 2 ways, for example, as 35976004 + 63984001 = 5998^2 + 7999^2
It is not a de Polignac number, because 99960005 - 26 = 99959941 is a prime.
It is a Duffinian number.
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9995996 + ... + 9996005.
It is an arithmetic number, because the mean of its divisors is an integer number (29988003).
Almost surely, 299960005 is an apocalyptic number.
It is an amenable number.
99960005 is a deficient number, since it is larger than the sum of its proper divisors (19992007).
99960005 is a wasteful number, since it uses less digits than its factorization.
99960005 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 19992006.
The product of its (nonzero) digits is 21870, while the sum is 38.
The square root of 99960005 is about 9998.0000500100.
Note that the first 4 decimals coincide.
The cubic root of 99960005 is about 464.0969949947.
The spelling of 99960005 in words is "ninety-nine million, nine hundred sixty thousand, five".