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89885 = 517977
BaseRepresentation
bin10101111100011101
311120022002
4111330131
510334020
61532045
7523025
oct257435
9146262
1089885
1161594
1244025
1331bb3
1424a85
151b975
hex15f1d

89885 has 4 divisors (see below), whose sum is σ = 107868. Its totient is φ = 71904.

The previous prime is 89867. The next prime is 89891. The reversal of 89885 is 58898.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 38809 + 51076 = 197^2 + 226^2 .

It is a cyclic number.

It is not a de Polignac number, because 89885 - 26 = 89821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 89885.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8984 + ... + 8993.

It is an arithmetic number, because the mean of its divisors is an integer number (26967).

289885 is an apocalyptic number.

It is an amenable number.

89885 is a deficient number, since it is larger than the sum of its proper divisors (17983).

89885 is a wasteful number, since it uses less digits than its factorization.

89885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17982.

The product of its digits is 23040, while the sum is 38.

The square root of 89885 is about 299.8082720673. The cubic root of 89885 is about 44.7949518653.

The spelling of 89885 in words is "eighty-nine thousand, eight hundred eighty-five".

Divisors: 1 5 17977 89885