90768329 has 2 divisors, whose sum is σ = 90768330. Its totient is φ = 90768328.

The previous prime is 90768311. The next prime is 90768361. The reversal of 90768329 is 92386709.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89340304 + 1428025 = 9452^2 + 1195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90768329 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90768329.

It is not a weakly prime, because it can be changed into another prime (90768229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45384164 + 45384165.

It is an arithmetic number, because the mean of its divisors is an integer number (45384165).

Almost surely, 2^90768329 is an apocalyptic number.

It is an amenable number.

90768329 is a deficient number, since it is larger than the sum of its proper divisors (1).

90768329 is an equidigital number, since it uses as much as digits as its factorization.

90768329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 90768329 is about 9527.2414160658. The cubic root of 90768329 is about 449.4121195697.

The spelling of 90768329 in words is "ninety million, seven hundred sixty-eight thousand, three hundred twenty-nine".