989697139200 has 3600 divisors, whose sum is σ = 4899430166400. Its totient is φ = 196709990400.

The previous prime is 989697139157. The next prime is 989697139201. The reversal of 989697139200 is 2931796989.

It is a happy number.

989697139200 is a `hidden beast` number, since 98 + 96 + 9 + 71 + 392 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (3600).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is not an unprimeable number, because it can be changed into a prime (989697139201) by changing a digit.

It is a polite number, since it can be written in 359 ways as a sum of consecutive naturals, for example, 43030310389 + ... + 43030310411.

It is an arithmetic number, because the mean of its divisors is an integer number (1360952824).

Almost surely, 2^989697139200 is an apocalyptic number.

989697139200 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 989697139200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2449715083200).

989697139200 is an abundant number, since it is smaller than the sum of its proper divisors (3909733027200).

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

989697139200 is a wasteful number, since it uses less digits than its factorization.

989697139200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106 (or 51 counting only the distinct ones).

The product of its (nonzero) digits is 13226976, while the sum is 63.

The spelling of 989697139200 in words is "nine hundred eighty-nine billion, six hundred ninety-seven million, one hundred thirty-nine thousand, two hundred".