91476823 has 2 divisors, whose sum is σ = 91476824. Its totient is φ = 91476822.

The previous prime is 91476809. The next prime is 91476829. The reversal of 91476823 is 32867419.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 91476823 - 2⁹ = 91476311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91476829) 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, 45738411 + 45738412.

It is an arithmetic number, because the mean of its divisors is an integer number (45738412).

Almost surely, 2^91476823 is an apocalyptic number.

91476823 is a deficient number, since it is larger than the sum of its proper divisors (1).

91476823 is an equidigital number, since it uses as much as digits as its factorization.

91476823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 40.

The square root of 91476823 is about 9564.3516769303. The cubic root of 91476823 is about 450.5783887838.

The spelling of 91476823 in words is "ninety-one million, four hundred seventy-six thousand, eight hundred twenty-three".