91648339 has 2 divisors, whose sum is σ = 91648340. Its totient is φ = 91648338.

The previous prime is 91648327. The next prime is 91648357. The reversal of 91648339 is 93384619.

It is a weak prime.

It is an emirp because it is prime and its reverse (93384619) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91648339 - 2⁷ = 91648211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91648295 and 91648304.

It is not a weakly prime, because it can be changed into another prime (91648939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45824169 + 45824170.

It is an arithmetic number, because the mean of its divisors is an integer number (45824170).

Almost surely, 2^91648339 is an apocalyptic number.

91648339 is a deficient number, since it is larger than the sum of its proper divisors (1).

91648339 is an equidigital number, since it uses as much as digits as its factorization.

91648339 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 139968, while the sum is 43.

The square root of 91648339 is about 9573.3138985411. The cubic root of 91648339 is about 450.8598194626.

The spelling of 91648339 in words is "ninety-one million, six hundred forty-eight thousand, three hundred thirty-nine".