989642930 has 96 divisors (see below), whose sum is σ = 2029147200. Its totient is φ = 346401792.

The previous prime is 989642921. The next prime is 989642939. The reversal of 989642930 is 39246989.

It is an interprime number because it is at equal distance from previous prime (989642921) and next prime (989642939).

It is not an unprimeable number, because it can be changed into a prime (989642939) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3678836 + ... + 3679104.

It is an arithmetic number, because the mean of its divisors is an integer number (21136950).

Almost surely, 2^989642930 is an apocalyptic number.

989642930 is an abundant number, since it is smaller than the sum of its proper divisors (1039504270).

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

989642930 is a wasteful number, since it uses less digits than its factorization.

989642930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396 (or 379 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 989642930 is about 31458.5907185939. The cubic root of 989642930 is about 996.5356555099.

The spelling of 989642930 in words is "nine hundred eighty-nine million, six hundred forty-two thousand, nine hundred thirty".