989830456 has 16 divisors (see below), whose sum is σ = 1856269800. Its totient is φ = 494825184.

The previous prime is 989830451. The next prime is 989830483. The reversal of 989830456 is 654038989.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989830451) 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, 69775 + ... + 82753.

Almost surely, 2^989830456 is an apocalyptic number.

It is an amenable number.

989830456 is a deficient number, since it is larger than the sum of its proper divisors (866439344).

989830456 is a wasteful number, since it uses less digits than its factorization.

989830456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22518 (or 22514 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 989830456 is about 31461.5710987230. The cubic root of 989830456 is about 996.5985955654.

The spelling of 989830456 in words is "nine hundred eighty-nine million, eight hundred thirty thousand, four hundred fifty-six".