91828873 has 2 divisors, whose sum is σ = 91828874. Its totient is φ = 91828872.

The previous prime is 91828861. The next prime is 91828901. The reversal of 91828873 is 37882819.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 88962624 + 2866249 = 9432^2 + 1693^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91828873 is a prime.

It is not a weakly prime, because it can be changed into another prime (91828813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45914436 + 45914437.

It is an arithmetic number, because the mean of its divisors is an integer number (45914437).

Almost surely, 2^91828873 is an apocalyptic number.

It is an amenable number.

91828873 is a deficient number, since it is larger than the sum of its proper divisors (1).

91828873 is an equidigital number, since it uses as much as digits as its factorization.

91828873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193536, while the sum is 46.

The square root of 91828873 is about 9582.7382829753. The cubic root of 91828873 is about 451.1556682113.

It can be divided in two parts, 918 and 28873, that added together give a cube (29791 = 31³).

The spelling of 91828873 in words is "ninety-one million, eight hundred twenty-eight thousand, eight hundred seventy-three".