91930475029 has 2 divisors, whose sum is σ = 91930475030. Its totient is φ = 91930475028.

The previous prime is 91930475011. The next prime is 91930475093. The reversal of 91930475029 is 92057403919.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91364130225 + 566344804 = 302265^2 + 23798^2 .

It is a cyclic number.

It is not a de Polignac number, because 91930475029 - 2⁵ = 91930474997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91930475099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45965237514 + 45965237515.

It is an arithmetic number, because the mean of its divisors is an integer number (45965237515).

Almost surely, 2^91930475029 is an apocalyptic number.

It is an amenable number.

91930475029 is a deficient number, since it is larger than the sum of its proper divisors (1).

91930475029 is an equidigital number, since it uses as much as digits as its factorization.

91930475029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 49.

The spelling of 91930475029 in words is "ninety-one billion, nine hundred thirty million, four hundred seventy-five thousand, twenty-nine".