89008781 has 12 divisors (see below), whose sum is σ = 95995296. Its totient is φ = 82371960.

The previous prime is 89008723. The next prime is 89008813. The reversal of 89008781 is 18780098.

It is a de Polignac number, because none of the positive numbers 2^k-89008781 is a prime.

It is a super-3 number, since 3×89008781³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89008981) 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 11 ways as a sum of consecutive naturals, for example, 20090 + ... + 24116.

It is an arithmetic number, because the mean of its divisors is an integer number (7999608).

Almost surely, 2^89008781 is an apocalyptic number.

It is an amenable number.

89008781 is a deficient number, since it is larger than the sum of its proper divisors (6986515).

89008781 is a wasteful number, since it uses less digits than its factorization.

89008781 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4112 (or 4081 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 41.

The square root of 89008781 is about 9434.4465126472. The cubic root of 89008781 is about 446.4891925687.

The spelling of 89008781 in words is "eighty-nine million, eight thousand, seven hundred eighty-one".