989942 has 8 divisors (see below), whose sum is σ = 1490016. Its totient is φ = 493272.

The previous prime is 989939. The next prime is 989951. The reversal of 989942 is 249989.

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

It is a self number, because there is not a number n which added to its sum of digits gives 989942.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 83 + ... + 1409.

It is an arithmetic number, because the mean of its divisors is an integer number (186252).

2⁹⁸⁹⁹⁴² is an apocalyptic number.

989942 is a deficient number, since it is larger than the sum of its proper divisors (500074).

989942 is a wasteful number, since it uses less digits than its factorization.

989942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702.

The product of its digits is 46656, while the sum is 41.

The square root of 989942 is about 994.9582905831. The cubic root of 989942 is about 99.6636029727.

The spelling of 989942 in words is "nine hundred eighty-nine thousand, nine hundred forty-two".