91908343 has 2 divisors, whose sum is σ = 91908344. Its totient is φ = 91908342.

The previous prime is 91908331. The next prime is 91908403. The reversal of 91908343 is 34380919.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91908343 - 2²¹ = 89811191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91948343) 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, 45954171 + 45954172.

It is an arithmetic number, because the mean of its divisors is an integer number (45954172).

Almost surely, 2^91908343 is an apocalyptic number.

91908343 is a deficient number, since it is larger than the sum of its proper divisors (1).

91908343 is an equidigital number, since it uses as much as digits as its factorization.

91908343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 91908343 is about 9586.8839045855. The cubic root of 91908343 is about 451.2857761758.

The spelling of 91908343 in words is "ninety-one million, nine hundred eight thousand, three hundred forty-three".