82363409 has 2 divisors, whose sum is σ = 82363410. Its totient is φ = 82363408.

The previous prime is 82363349. The next prime is 82363427. The reversal of 82363409 is 90436328.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73530625 + 8832784 = 8575^2 + 2972^2 .

It is a cyclic number.

It is not a de Polignac number, because 82363409 - 2⁸ = 82363153 is a prime.

It is a super-2 number, since 2×82363409² = 13567462284202562, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (82363429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41181704 + 41181705.

It is an arithmetic number, because the mean of its divisors is an integer number (41181705).

Almost surely, 2^82363409 is an apocalyptic number.

It is an amenable number.

82363409 is a deficient number, since it is larger than the sum of its proper divisors (1).

82363409 is an equidigital number, since it uses as much as digits as its factorization.

82363409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 82363409 is about 9075.4288603900. The cubic root of 82363409 is about 435.0890010343.

The spelling of 82363409 in words is "eighty-two million, three hundred sixty-three thousand, four hundred nine".