91449671 has 2 divisors, whose sum is σ = 91449672. Its totient is φ = 91449670.

The previous prime is 91449667. The next prime is 91449719. The reversal of 91449671 is 17694419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91449671 - 2² = 91449667 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91449601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45724835 + 45724836.

It is an arithmetic number, because the mean of its divisors is an integer number (45724836).

Almost surely, 2^91449671 is an apocalyptic number.

91449671 is a deficient number, since it is larger than the sum of its proper divisors (1).

91449671 is an equidigital number, since it uses as much as digits as its factorization.

91449671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 41.

The square root of 91449671 is about 9562.9321340267. The cubic root of 91449671 is about 450.5338043939.

The spelling of 91449671 in words is "ninety-one million, four hundred forty-nine thousand, six hundred seventy-one".