91883863 has 2 divisors, whose sum is σ = 91883864. Its totient is φ = 91883862.

The previous prime is 91883851. The next prime is 91883879. The reversal of 91883863 is 36838819.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91883863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91883833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45941931 + 45941932.

It is an arithmetic number, because the mean of its divisors is an integer number (45941932).

Almost surely, 2^91883863 is an apocalyptic number.

91883863 is a deficient number, since it is larger than the sum of its proper divisors (1).

91883863 is an equidigital number, since it uses as much as digits as its factorization.

91883863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 46.

The square root of 91883863 is about 9585.6070751935. The cubic root of 91883863 is about 451.2457056141.

The spelling of 91883863 in words is "ninety-one million, eight hundred eighty-three thousand, eight hundred sixty-three".