989666524 has 36 divisors (see below), whose sum is σ = 2197835640. Its totient is φ = 385583520.

The previous prime is 989666521. The next prime is 989666527. The reversal of 989666524 is 425666989.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (989666521) and next prime (989666527).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989666521) 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 11 ways as a sum of consecutive naturals, for example, 227359 + ... + 231670.

It is an arithmetic number, because the mean of its divisors is an integer number (61050990).

Almost surely, 2^989666524 is an apocalyptic number.

It is an amenable number.

989666524 is an abundant number, since it is smaller than the sum of its proper divisors (1208169116).

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

989666524 is a wasteful number, since it uses less digits than its factorization.

989666524 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 459058 (or 459049 counting only the distinct ones).

The product of its digits is 5598720, while the sum is 55.

The square root of 989666524 is about 31458.9657172641. The cubic root of 989666524 is about 996.5435748900.

The spelling of 989666524 in words is "nine hundred eighty-nine million, six hundred sixty-six thousand, five hundred twenty-four".