91105379 has 2 divisors, whose sum is σ = 91105380. Its totient is φ = 91105378.

The previous prime is 91105367. The next prime is 91105439. The reversal of 91105379 is 97350119.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91105379 - 2⁸ = 91105123 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (91105309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45552689 + 45552690.

It is an arithmetic number, because the mean of its divisors is an integer number (45552690).

Almost surely, 2^91105379 is an apocalyptic number.

91105379 is a deficient number, since it is larger than the sum of its proper divisors (1).

91105379 is an equidigital number, since it uses as much as digits as its factorization.

91105379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8505, while the sum is 35.

The square root of 91105379 is about 9544.9137764571. The cubic root of 91105379 is about 449.9676997392.

The spelling of 91105379 in words is "ninety-one million, one hundred five thousand, three hundred seventy-nine".