4989842 has 32 divisors (see below), whose sum is σ = 8951040. Its totient is φ = 2056320.

The previous prime is 4989841. The next prime is 4989847. The reversal of 4989842 is 2489894.

It is a happy number.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4989793 and 4989802.

It is not an unprimeable number, because it can be changed into a prime (4989841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20759 + ... + 20997.

It is an arithmetic number, because the mean of its divisors is an integer number (279720).

Almost surely, 2^4989842 is an apocalyptic number.

4989842 is a deficient number, since it is larger than the sum of its proper divisors (3961198).

4989842 is a wasteful number, since it uses less digits than its factorization.

4989842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338.

The product of its digits is 165888, while the sum is 44.

The square root of 4989842 is about 2233.7954248319. The cubic root of 4989842 is about 170.8817165885.

The spelling of 4989842 in words is "four million, nine hundred eighty-nine thousand, eight hundred forty-two".