91966471 has 2 divisors, whose sum is σ = 91966472. Its totient is φ = 91966470.

The previous prime is 91966463. The next prime is 91966487. The reversal of 91966471 is 17466919.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91966471 - 2³ = 91966463 is a prime.

It is a super-3 number, since 3×91966471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91960471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45983235 + 45983236.

It is an arithmetic number, because the mean of its divisors is an integer number (45983236).

Almost surely, 2^91966471 is an apocalyptic number.

91966471 is a deficient number, since it is larger than the sum of its proper divisors (1).

91966471 is an equidigital number, since it uses as much as digits as its factorization.

91966471 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 43.

The square root of 91966471 is about 9589.9150674028. The cubic root of 91966471 is about 451.3808956192.

The spelling of 91966471 in words is "ninety-one million, nine hundred sixty-six thousand, four hundred seventy-one".