83960609 has 2 divisors, whose sum is σ = 83960610. Its totient is φ = 83960608.

The previous prime is 83960567. The next prime is 83960621. The reversal of 83960609 is 90606938.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77933584 + 6027025 = 8828^2 + 2455^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83960609 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (83960699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41980304 + 41980305.

It is an arithmetic number, because the mean of its divisors is an integer number (41980305).

Almost surely, 2^83960609 is an apocalyptic number.

It is an amenable number.

83960609 is a deficient number, since it is larger than the sum of its proper divisors (1).

83960609 is an equidigital number, since it uses as much as digits as its factorization.

83960609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 83960609 is about 9163.0021826910. The cubic root of 83960609 is about 437.8834454921.

The spelling of 83960609 in words is "eighty-three million, nine hundred sixty thousand, six hundred nine".