89856863 has 2 divisors, whose sum is σ = 89856864. Its totient is φ = 89856862.

The previous prime is 89856859. The next prime is 89856887. The reversal of 89856863 is 36865898.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 89856863 - 2² = 89856859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89856853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44928431 + 44928432.

It is an arithmetic number, because the mean of its divisors is an integer number (44928432).

Almost surely, 2^89856863 is an apocalyptic number.

89856863 is a deficient number, since it is larger than the sum of its proper divisors (1).

89856863 is an equidigital number, since it uses as much as digits as its factorization.

89856863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 53.

The square root of 89856863 is about 9479.2859963185. The cubic root of 89856863 is about 447.9027727331.

The spelling of 89856863 in words is "eighty-nine million, eight hundred fifty-six thousand, eight hundred sixty-three".