989673930 has 64 divisors (see below), whose sum is σ = 3016154880. Its totient is φ = 226210752.

The previous prime is 989673917. The next prime is 989673931. The reversal of 989673930 is 39376989.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (989673931) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 259929 + ... + 263708.

It is an arithmetic number, because the mean of its divisors is an integer number (47127420).

Almost surely, 2^989673930 is an apocalyptic number.

989673930 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

989673930 is an abundant number, since it is smaller than the sum of its proper divisors (2026480950).

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

989673930 is a wasteful number, since it uses less digits than its factorization.

989673930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523660 (or 523654 counting only the distinct ones).

The product of its (nonzero) digits is 2204496, while the sum is 54.

The square root of 989673930 is about 31459.0834259360. The cubic root of 989673930 is about 996.5460607048.

The spelling of 989673930 in words is "nine hundred eighty-nine million, six hundred seventy-three thousand, nine hundred thirty".