91320629 has 2 divisors, whose sum is σ = 91320630. Its totient is φ = 91320628.

The previous prime is 91320569. The next prime is 91320641. The reversal of 91320629 is 92602319.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49420900 + 41899729 = 7030^2 + 6473^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-91320629 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 91320595 and 91320604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91320689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45660314 + 45660315.

It is an arithmetic number, because the mean of its divisors is an integer number (45660315).

Almost surely, 2^91320629 is an apocalyptic number.

It is an amenable number.

91320629 is a deficient number, since it is larger than the sum of its proper divisors (1).

91320629 is an equidigital number, since it uses as much as digits as its factorization.

91320629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 91320629 is about 9556.1827630074. The cubic root of 91320629 is about 450.3217928778.

The spelling of 91320629 in words is "ninety-one million, three hundred twenty thousand, six hundred twenty-nine".