4989918 has 8 divisors (see below), whose sum is σ = 9979848. Its totient is φ = 1663304.

The previous prime is 4989917. The next prime is 4989937. The reversal of 4989918 is 8199894.

It is a sphenic number, since it is the product of 3 distinct primes.

4989918 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4989917) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 415821 + ... + 415832.

It is an arithmetic number, because the mean of its divisors is an integer number (1247481).

Almost surely, 2^4989918 is an apocalyptic number.

4989918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4989918 is a wasteful number, since it uses less digits than its factorization.

4989918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831658.

The product of its digits is 186624, while the sum is 48.

The square root of 4989918 is about 2233.8124361727. The cubic root of 4989918 is about 170.8825841473.

The spelling of 4989918 in words is "four million, nine hundred eighty-nine thousand, nine hundred eighteen".