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BaseRepresentation
bin111111110111
312121101
4333313
5112322
630531
714626
oct7767
95541
104087
113086
122447
131b25
1416bd
151327
hexff7

4087 has 4 divisors (see below), whose sum is σ = 4216. Its totient is φ = 3960.

The previous prime is 4079. The next prime is 4091. The reversal of 4087 is 7804.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4087 - 23 = 4079 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12 and base 14.

It is a nialpdrome in base 9 and base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4007) by changing a digit.

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, 28 + ... + 94.

It is an arithmetic number, because the mean of its divisors is an integer number (1054).

24087 is an apocalyptic number.

4087 is a deficient number, since it is larger than the sum of its proper divisors (129).

4087 is an equidigital number, since it uses as much as digits as its factorization.

4087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128.

The product of its (nonzero) digits is 224, while the sum is 19.

The square root of 4087 is about 63.9296488337. The cubic root of 4087 is about 15.9882726564.

The spelling of 4087 in words is "four thousand, eighty-seven".

Divisors: 1 61 67 4087