989269487064 has 128 divisors (see below), whose sum is σ = 2789930476800. Its totient is φ = 328804170912.

The previous prime is 989269487027. The next prime is 989269487069. The reversal of 989269487064 is 460784962989.

989269487064 is a `hidden beast` number, since 9 + 89 + 2 + 6 + 9 + 487 + 0 + 64 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 989269486983 and 989269487001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989269487069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5989639 + ... + 6152585.

It is an arithmetic number, because the mean of its divisors is an integer number (21796331850).

Almost surely, 2^989269487064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989269487064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1394965238400).

989269487064 is an abundant number, since it is smaller than the sum of its proper divisors (1800660989736).

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

989269487064 is a wasteful number, since it uses less digits than its factorization.

989269487064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163321 (or 163299 counting only the distinct ones).

The product of its (nonzero) digits is 376233984, while the sum is 72.

The spelling of 989269487064 in words is "nine hundred eighty-nine billion, two hundred sixty-nine million, four hundred eighty-seven thousand, sixty-four".