90682309 has 2 divisors, whose sum is σ = 90682310. Its totient is φ = 90682308.

The previous prime is 90682271. The next prime is 90682331. The reversal of 90682309 is 90328609.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86081284 + 4601025 = 9278^2 + 2145^2 .

It is a cyclic number.

It is not a de Polignac number, because 90682309 - 2⁷ = 90682181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90382309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45341154 + 45341155.

It is an arithmetic number, because the mean of its divisors is an integer number (45341155).

Almost surely, 2^90682309 is an apocalyptic number.

It is an amenable number.

90682309 is a deficient number, since it is larger than the sum of its proper divisors (1).

90682309 is an equidigital number, since it uses as much as digits as its factorization.

90682309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 90682309 is about 9522.7259227597. The cubic root of 90682309 is about 449.2701073009.

The spelling of 90682309 in words is "ninety million, six hundred eighty-two thousand, three hundred nine".