989472636 has 72 divisors (see below), whose sum is σ = 2530688160. Its totient is φ = 325956096.

The previous prime is 989472559. The next prime is 989472637. The reversal of 989472636 is 636274989.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989472637) 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 23 ways as a sum of consecutive naturals, for example, 2164920 + ... + 2165376.

Almost surely, 2^989472636 is an apocalyptic number.

It is an amenable number.

989472636 is an abundant number, since it is smaller than the sum of its proper divisors (1541215524).

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

989472636 is a wasteful number, since it uses less digits than its factorization.

989472636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1043 (or 1038 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 54.

The square root of 989472636 is about 31455.8839646893. The cubic root of 989472636 is about 996.4784922063.

The spelling of 989472636 in words is "nine hundred eighty-nine million, four hundred seventy-two thousand, six hundred thirty-six".