13009901 has 2 divisors, whose sum is σ = 13009902. Its totient is φ = 13009900.

The previous prime is 13009823. The next prime is 13009907. The reversal of 13009901 is 10990031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12888100 + 121801 = 3590^2 + 349^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13009901 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13009907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6504950 + 6504951.

It is an arithmetic number, because the mean of its divisors is an integer number (6504951).

Almost surely, 2^13009901 is an apocalyptic number.

It is an amenable number.

13009901 is a deficient number, since it is larger than the sum of its proper divisors (1).

13009901 is an equidigital number, since it uses as much as digits as its factorization.

13009901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243, while the sum is 23.

The square root of 13009901 is about 3606.9240357956. The cubic root of 13009901 is about 235.1931473797.

Adding to 13009901 its reverse (10990031), we get a palindrome (23999932).

The spelling of 13009901 in words is "thirteen million, nine thousand, nine hundred one".