89999936863 has 2 divisors, whose sum is σ = 89999936864. Its totient is φ = 89999936862.

The previous prime is 89999936857. The next prime is 89999936891. The reversal of 89999936863 is 36863999998.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89999936863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89999936833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44999968431 + 44999968432.

It is an arithmetic number, because the mean of its divisors is an integer number (44999968432).

Almost surely, 2^89999936863 is an apocalyptic number.

89999936863 is a deficient number, since it is larger than the sum of its proper divisors (1).

89999936863 is an equidigital number, since it uses as much as digits as its factorization.

89999936863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1224440064, while the sum is 79.

The spelling of 89999936863 in words is "eighty-nine billion, nine hundred ninety-nine million, nine hundred thirty-six thousand, eight hundred sixty-three".