989724342 has 8 divisors (see below), whose sum is σ = 1979448696. Its totient is φ = 329908112.

The previous prime is 989724319. The next prime is 989724347. The reversal of 989724342 is 243427989.

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

989724342 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 989724291 and 989724300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989724347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82477023 + ... + 82477034.

It is an arithmetic number, because the mean of its divisors is an integer number (247431087).

Almost surely, 2^989724342 is an apocalyptic number.

989724342 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.

989724342 is a wasteful number, since it uses less digits than its factorization.

989724342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164954062.

The product of its digits is 870912, while the sum is 48.

The square root of 989724342 is about 31459.8846469595. The cubic root of 989724342 is about 996.5629811017.

The spelling of 989724342 in words is "nine hundred eighty-nine million, seven hundred twenty-four thousand, three hundred forty-two".