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87119089 = 842310343
BaseRepresentation
bin1010011000101…
…01010011110001
320001221002220221
411030111103301
5134300302324
612351133041
72105333341
oct514252361
9201832827
1087119089
11451a3952
1225214181
1315083875
14b7dad21
1579ad0e4
hex53154f1

87119089 has 4 divisors (see below), whose sum is σ = 87137856. Its totient is φ = 87100324.

The previous prime is 87119069. The next prime is 87119093. The reversal of 87119089 is 98091178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87119089 - 213 = 87110897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87119029) 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 3 ways as a sum of consecutive naturals, for example, 3252 + ... + 13594.

It is an arithmetic number, because the mean of its divisors is an integer number (21784464).

Almost surely, 287119089 is an apocalyptic number.

It is an amenable number.

87119089 is a deficient number, since it is larger than the sum of its proper divisors (18767).

87119089 is a wasteful number, since it uses less digits than its factorization.

87119089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18766.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 87119089 is about 9333.7607104532. The cubic root of 87119089 is about 443.3068496940.

The spelling of 87119089 in words is "eighty-seven million, one hundred nineteen thousand, eighty-nine".

Divisors: 1 8423 10343 87119089