89091447984 has 360 divisors, whose sum is σ = 327325723920. Its totient is φ = 22342118400.

The previous prime is 89091447971. The next prime is 89091447997. The reversal of 89091447984 is 48974419098.

It is a happy number.

89091447984 is a `hidden beast` number, since 89 + 0 + 9 + 1 + 4 + 479 + 84 = 666.

It is an interprime number because it is at equal distance from previous prime (89091447971) and next prime (89091447997).

It is a super-2 number, since 2×89091447984² (a number of 23 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2231074 + ... + 2270654.

It is an arithmetic number, because the mean of its divisors is an integer number (909238122).

Almost surely, 2^89091447984 is an apocalyptic number.

89091447984 is a gapful number since it is divisible by the number (84) 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 89091447984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (163662861960).

89091447984 is an abundant number, since it is smaller than the sum of its proper divisors (238234275936).

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

89091447984 is a wasteful number, since it uses less digits than its factorization.

89091447984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39649 (or 39633 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 89091447984 in words is "eighty-nine billion, ninety-one million, four hundred forty-seven thousand, nine hundred eighty-four".