91873043 has 2 divisors, whose sum is σ = 91873044. Its totient is φ = 91873042.

The previous prime is 91873039. The next prime is 91873097. The reversal of 91873043 is 34037819.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91873043 - 2² = 91873039 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91872994 and 91873012.

It is not a weakly prime, because it can be changed into another prime (91872043) 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, 45936521 + 45936522.

It is an arithmetic number, because the mean of its divisors is an integer number (45936522).

Almost surely, 2^91873043 is an apocalyptic number.

91873043 is a deficient number, since it is larger than the sum of its proper divisors (1).

91873043 is an equidigital number, since it uses as much as digits as its factorization.

91873043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 91873043 is about 9585.0426707449. The cubic root of 91873043 is about 451.2279924197.

The spelling of 91873043 in words is "ninety-one million, eight hundred seventy-three thousand, forty-three".