99980041 has 10 divisors (see below), whose sum is σ = 116639242.
Its totient is φ = 85695120.
The previous prime is 99980003. The next prime is 99980047. The reversal of 99980041 is 14008999.
It can be written as a sum of positive squares in only one way, i.e., 99920016 + 60025 = 9996^2 + 245^2
It is not a de Polignac number, because 99980041 - 215 = 99947273 is a prime.
It is a Duffinian number.
It is a junction number, because it is equal to n+sod(n) for n = 99979976 and 99980003.
It is not an unprimeable number, because it can be changed into a prime (99980047) by changing a digit.
It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 18420 + ... + 23221.
Almost surely, 299980041 is an apocalyptic number.
It is an amenable number.
99980041 is a deficient number, since it is larger than the sum of its proper divisors (16659201).
99980041 is an frugal number, since it uses more digits than its factorization.
99980041 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 41669 (or 41648 counting only the distinct ones).
The product of its (nonzero) digits is 23328, while the sum is 40.
The square root of 99980041 is about 9999.0020001998.
The cubic root of 99980041 is about 464.1280008161.
Subtracting from 99980041 its sum of digits (40), we obtain a square (99980001 = 99992).
The spelling of 99980041 in words is "ninety-nine million, nine hundred eighty thousand, forty-one".