91058039 has 2 divisors, whose sum is σ = 91058040. Its totient is φ = 91058038.

The previous prime is 91058029. The next prime is 91058113. The reversal of 91058039 is 93085019.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91058039 - 2⁸ = 91057783 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91058029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45529019 + 45529020.

It is an arithmetic number, because the mean of its divisors is an integer number (45529020).

Almost surely, 2^91058039 is an apocalyptic number.

91058039 is a deficient number, since it is larger than the sum of its proper divisors (1).

91058039 is an equidigital number, since it uses as much as digits as its factorization.

91058039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9720, while the sum is 35.

The square root of 91058039 is about 9542.4335994546. The cubic root of 91058039 is about 449.8897491222.

The spelling of 91058039 in words is "ninety-one million, fifty-eight thousand, thirty-nine".