989818 has 8 divisors (see below), whose sum is σ = 1488960. Its totient is φ = 493500.

The previous prime is 989803. The next prime is 989827. The reversal of 989818 is 818989.

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

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 943 + ... + 1693.

It is an arithmetic number, because the mean of its divisors is an integer number (186120).

2⁹⁸⁹⁸¹⁸ is an apocalyptic number.

989818 is a deficient number, since it is larger than the sum of its proper divisors (499142).

989818 is a wasteful number, since it uses less digits than its factorization.

989818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412.

The product of its digits is 41472, while the sum is 43.

The square root of 989818 is about 994.8959744617. The cubic root of 989818 is about 99.6594415158.

It can be divided in two parts, 98981 and 8, that added together give a palindrome (98989).

The spelling of 989818 in words is "nine hundred eighty-nine thousand, eight hundred eighteen".