989909480 has 32 divisors (see below), whose sum is σ = 2545482240. Its totient is φ = 339397440.

The previous prime is 989909471. The next prime is 989909483. The reversal of 989909480 is 84909989.

It is a Harshad number since it is a multiple of its sum of digits (56).

It is not an unprimeable number, because it can be changed into a prime (989909483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1767416 + ... + 1767975.

It is an arithmetic number, because the mean of its divisors is an integer number (79546320).

Almost surely, 2^989909480 is an apocalyptic number.

It is an amenable number.

989909480 is an abundant number, since it is smaller than the sum of its proper divisors (1555572760).

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

989909480 is a wasteful number, since it uses less digits than its factorization.

989909480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3535409 (or 3535405 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 56.

The square root of 989909480 is about 31462.8269549956. The cubic root of 989909480 is about 996.6251163065.

The spelling of 989909480 in words is "nine hundred eighty-nine million, nine hundred nine thousand, four hundred eighty".