99000997 has 8 divisors (see below), whose sum is σ = 100850400.
Its totient is φ = 97157424.
The previous prime is 99000991. The next prime is 99001031. The reversal of 99000997 is 79900099.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 99000997 - 219 = 98476709 is a prime.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (99000991) 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, 47779 + ... + 49807.
It is an arithmetic number, because the mean of its divisors is an integer number (12606300).
Almost surely, 299000997 is an apocalyptic number.
It is an amenable number.
99000997 is a deficient number, since it is larger than the sum of its proper divisors (1849403).
99000997 is a wasteful number, since it uses less digits than its factorization.
99000997 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2915.
The product of its (nonzero) digits is 45927, while the sum is 43.
The square root of 99000997 is about 9949.9244720752.
The cubic root of 99000997 is about 462.6080538379.
The spelling of 99000997 in words is "ninety-nine million, nine hundred ninety-seven", and thus it is an aban number.