91414039 has 2 divisors, whose sum is σ = 91414040. Its totient is φ = 91414038.

The previous prime is 91414019. The next prime is 91414067. The reversal of 91414039 is 93041419.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 91414039 - 2⁷ = 91413911 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 91414039.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91414019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45707019 + 45707020.

It is an arithmetic number, because the mean of its divisors is an integer number (45707020).

Almost surely, 2^91414039 is an apocalyptic number.

91414039 is a deficient number, since it is larger than the sum of its proper divisors (1).

91414039 is an equidigital number, since it uses as much as digits as its factorization.

91414039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 91414039 is about 9561.0689255961. The cubic root of 91414039 is about 450.4752822006.

The spelling of 91414039 in words is "ninety-one million, four hundred fourteen thousand, thirty-nine".