10207409 has 2 divisors, whose sum is σ = 10207410. Its totient is φ = 10207408.

The previous prime is 10207397. The next prime is 10207411. The reversal of 10207409 is 90470201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9150625 + 1056784 = 3025^2 + 1028^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10207409 is a prime.

It is a Sophie Germain prime.

Together with 10207411, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (10207909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103704 + 5103705.

It is an arithmetic number, because the mean of its divisors is an integer number (5103705).

Almost surely, 2^10207409 is an apocalyptic number.

It is an amenable number.

10207409 is a deficient number, since it is larger than the sum of its proper divisors (1).

10207409 is an equidigital number, since it uses as much as digits as its factorization.

10207409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 10207409 is about 3194.9035979197. The cubic root of 10207409 is about 216.9227853577.

The spelling of 10207409 in words is "ten million, two hundred seven thousand, four hundred nine".