90382309 has 2 divisors, whose sum is σ = 90382310. Its totient is φ = 90382308.

The previous prime is 90382301. The next prime is 90382321. The reversal of 90382309 is 90328309.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83777409 + 6604900 = 9153^2 + 2570^2 .

It is an emirp because it is prime and its reverse (90328309) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 90382309 - 2³ = 90382301 is a prime.

It is equal to p_5237944 and since 90382309 and 5237944 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90382301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45191154 + 45191155.

It is an arithmetic number, because the mean of its divisors is an integer number (45191155).

Almost surely, 2^90382309 is an apocalyptic number.

It is an amenable number.

90382309 is a deficient number, since it is larger than the sum of its proper divisors (1).

90382309 is an equidigital number, since it uses as much as digits as its factorization.

90382309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 90382309 is about 9506.9610812288. The cubic root of 90382309 is about 448.7741269296.

The spelling of 90382309 in words is "ninety million, three hundred eighty-two thousand, three hundred nine".