91338629 has 2 divisors, whose sum is σ = 91338630. Its totient is φ = 91338628.

The previous prime is 91338623. The next prime is 91338659. The reversal of 91338629 is 92683319.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90288004 + 1050625 = 9502^2 + 1025^2 .

It is a cyclic number.

It is not a de Polignac number, because 91338629 - 2⁴ = 91338613 is a 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 (91338623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45669314 + 45669315.

It is an arithmetic number, because the mean of its divisors is an integer number (45669315).

Almost surely, 2^91338629 is an apocalyptic number.

It is an amenable number.

91338629 is a deficient number, since it is larger than the sum of its proper divisors (1).

91338629 is an equidigital number, since it uses as much as digits as its factorization.

91338629 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 91338629 is about 9557.1245152504. The cubic root of 91338629 is about 450.3513782331.

The spelling of 91338629 in words is "ninety-one million, three hundred thirty-eight thousand, six hundred twenty-nine".