4998 has 24 divisors (see below), whose sum is σ = 12312.
Its totient is φ = 1344.
The previous prime is 4993. The next prime is 4999. The reversal of 4998 is 8994.
It is an Ulam number.
Its product of digits (2592) is a multiple of the sum of its prime factors (36).
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (4993) by changing a digit.
4998 is an untouchable number, because it is not equal to the sum of proper divisors of any number.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 286 + ... + 302.
It is an arithmetic number, because the mean of its divisors is an integer number (513).
It is a practical number, because each smaller number is the sum of distinct divisors of 4998, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6156).
4998 is an abundant number, since it is smaller than the sum of its proper divisors (7314).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
4998 is a wasteful number, since it uses less digits than its factorization.
4998 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 36 (or 29 counting only the distinct ones).
The product of its digits is 2592, while the sum is 30.
The square root of 4998 is about 70.6965345685.
The cubic root of 4998 is about 17.0974791948.
The spelling of 4998 in words is "four thousand, nine hundred ninety-eight".