89869821720 has 256 divisors, whose sum is σ = 314302464000. Its totient is φ = 20133674496.

The previous prime is 89869821707. The next prime is 89869821733. The reversal of 89869821720 is 2712896898.

It is an interprime number because it is at equal distance from previous prime (89869821707) and next prime (89869821733).

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9219169 + ... + 9228911.

It is an arithmetic number, because the mean of its divisors is an integer number (1227744000).

Almost surely, 2^89869821720 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 89869821720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157151232000).

89869821720 is an abundant number, since it is smaller than the sum of its proper divisors (224432642280).

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

89869821720 is a wasteful number, since it uses less digits than its factorization.

89869821720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9982 (or 9978 counting only the distinct ones).

The product of its (nonzero) digits is 6967296, while the sum is 60.

The spelling of 89869821720 in words is "eighty-nine billion, eight hundred sixty-nine million, eight hundred twenty-one thousand, seven hundred twenty".