7982609 has 2 divisors, whose sum is σ = 7982610. Its totient is φ = 7982608.

The previous prime is 7982567. The next prime is 7982629. The reversal of 7982609 is 9062897.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5626384 + 2356225 = 2372^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 7982609 - 2²⁰ = 6934033 is a prime.

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 (7982629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3991304 + 3991305.

It is an arithmetic number, because the mean of its divisors is an integer number (3991305).

Almost surely, 2^7982609 is an apocalyptic number.

It is an amenable number.

7982609 is a deficient number, since it is larger than the sum of its proper divisors (1).

7982609 is an equidigital number, since it uses as much as digits as its factorization.

7982609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 7982609 is about 2825.3511286210. The cubic root of 7982609 is about 199.8549698567.

The spelling of 7982609 in words is "seven million, nine hundred eighty-two thousand, six hundred nine".