99000998 has 4 divisors (see below), whose sum is σ = 148501500.
Its totient is φ = 49500498.
The previous prime is 99000991. The next prime is 99001031. The reversal of 99000998 is 89900099.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 89900099 = 7691 ⋅11689.
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 as a sum of consecutive naturals, namely, 24750248 + ... + 24750251.
It is an arithmetic number, because the mean of its divisors is an integer number (37125375).
Almost surely, 299000998 is an apocalyptic number.
99000998 is a deficient number, since it is larger than the sum of its proper divisors (49500502).
99000998 is a wasteful number, since it uses less digits than its factorization.
99000998 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 49500501.
The product of its (nonzero) digits is 52488, while the sum is 44.
The square root of 99000998 is about 9949.9245223268.
The cubic root of 99000998 is about 462.6080553955.
The spelling of 99000998 in words is "ninety-nine million, nine hundred ninety-eight", and thus it is an aban number.