989442 has 32 divisors (see below), whose sum is σ = 2237760. Its totient is φ = 324000.

The previous prime is 989441. The next prime is 989467. The reversal of 989442 is 244989.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 989397 and 989406.

It is not an unprimeable number, because it can be changed into a prime (989441) 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, 3817 + ... + 4067.

It is an arithmetic number, because the mean of its divisors is an integer number (69930).

2⁹⁸⁹⁴⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1118880).

989442 is an abundant number, since it is smaller than the sum of its proper divisors (1248318).

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

989442 is a wasteful number, since it uses less digits than its factorization.

989442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 329 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 989442 is about 994.7069920333. The cubic root of 989442 is about 99.6468207795.

It can be divided in two parts, 989 and 442, that added together give a triangular number (1431 = T₅₃).

The spelling of 989442 in words is "nine hundred eighty-nine thousand, four hundred forty-two".