90863 has 2 divisors, whose sum is σ = 90864. Its totient is φ = 90862.

The previous prime is 90847. The next prime is 90887. The reversal of 90863 is 36809.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (36809) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90863 - 2⁴ = 90847 is a prime.

It is a plaindrome in base 12.

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 90863.

It is not a weakly prime, because it can be changed into another prime (90803) 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 as a sum of consecutive naturals, namely, 45431 + 45432.

It is an arithmetic number, because the mean of its divisors is an integer number (45432).

2⁹⁰⁸⁶³ is an apocalyptic number.

90863 is a deficient number, since it is larger than the sum of its proper divisors (1).

90863 is an equidigital number, since it uses as much as digits as its factorization.

90863 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 90863 is about 301.4349017616. The cubic root of 90863 is about 44.9568310288.

The spelling of 90863 in words is "ninety thousand, eight hundred sixty-three".