989143392 has 24 divisors (see below), whose sum is σ = 2596501656. Its totient is φ = 329714432.

The previous prime is 989143391. The next prime is 989143411. The reversal of 989143392 is 293341989.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989143391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5151693 + ... + 5151884.

It is an arithmetic number, because the mean of its divisors is an integer number (108187569).

Almost surely, 2^989143392 is an apocalyptic number.

It is an amenable number.

989143392 is an abundant number, since it is smaller than the sum of its proper divisors (1607358264).

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

989143392 is a wasteful number, since it uses less digits than its factorization.

989143392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10303590 (or 10303582 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 989143392 is about 31450.6501045686. The cubic root of 989143392 is about 996.3679548860.

The spelling of 989143392 in words is "nine hundred eighty-nine million, one hundred forty-three thousand, three hundred ninety-two".