90887 has 2 divisors, whose sum is σ = 90888. Its totient is φ = 90886.
The previous prime is 90863. The next prime is 90901. The reversal of 90887 is 78809.
It is a strong prime.
It is an emirp because it is prime and its reverse (78809) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 90887 - 26 = 90823 is a prime.
It is a Chen prime.
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 90887.
It is not a weakly prime, because it can be changed into another prime (90847) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45443 + 45444.
It is an arithmetic number, because the mean of its divisors is an integer number (45444).
290887 is an apocalyptic number.
90887 is a deficient number, since it is larger than the sum of its proper divisors (1).
90887 is an equidigital number, since it uses as much as digits as its factorization.
90887 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 4032, while the sum is 32.
The square root of 90887 is about 301.4747087236. The cubic root of 90887 is about 44.9607888883.
The spelling of 90887 in words is "ninety thousand, eight hundred eighty-seven".
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