99860049 has 9 divisors (see below), whose sum is σ = 144285609.
Its totient is φ = 66553380.
The previous prime is 99860041. The next prime is 99860107. The reversal of 99860049 is 94006899.
The square root of 99860049 is 9993.
It is a perfect power (a square), and thus also a powerful number.
It is a tau number, because it is divible by the number of its divisors (9).
It is not a de Polignac number, because 99860049 - 23 = 99860041 is a prime.
It is a junction number, because it is equal to n+sod(n) for n = 99859986 and 99860013.
It is not an unprimeable number, because it can be changed into a prime (99860041) 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 8 ways as a sum of consecutive naturals, for example, 28314 + ... + 31644.
Almost surely, 299860049 is an apocalyptic number.
99860049 is the 9993-rd square number.
99860049 is the 4997-th centered octagonal number.
It is an amenable number.
99860049 is a deficient number, since it is larger than the sum of its proper divisors (44425560).
99860049 is an frugal number, since it uses more digits than its factorization.
99860049 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 6668 (or 3334 counting only the distinct ones).
The product of its (nonzero) digits is 139968, while the sum is 45.
The cubic root of 99860049 is about 463.9422506036.
The spelling of 99860049 in words is "ninety-nine million, eight hundred sixty thousand, forty-nine".