91068829 has 2 divisors, whose sum is σ = 91068830. Its totient is φ = 91068828.

The previous prime is 91068821. The next prime is 91068841. The reversal of 91068829 is 92886019.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80192025 + 10876804 = 8955^2 + 3298^2 .

It is a cyclic number.

It is not a de Polignac number, because 91068829 - 2³ = 91068821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91068821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45534414 + 45534415.

It is an arithmetic number, because the mean of its divisors is an integer number (45534415).

Almost surely, 2^91068829 is an apocalyptic number.

It is an amenable number.

91068829 is a deficient number, since it is larger than the sum of its proper divisors (1).

91068829 is an equidigital number, since it uses as much as digits as its factorization.

91068829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 91068829 is about 9542.9989521114. The cubic root of 91068829 is about 449.9075184436.

The spelling of 91068829 in words is "ninety-one million, sixty-eight thousand, eight hundred twenty-nine".