133299913 has 2 divisors, whose sum is σ = 133299914. Its totient is φ = 133299912.

The previous prime is 133299911. The next prime is 133299919. The reversal of 133299913 is 319992331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99042304 + 34257609 = 9952^2 + 5853^2 .

It is a cyclic number.

It is not a de Polignac number, because 133299913 - 2¹ = 133299911 is a prime.

Together with 133299911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133299911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66649956 + 66649957.

It is an arithmetic number, because the mean of its divisors is an integer number (66649957).

Almost surely, 2^133299913 is an apocalyptic number.

It is an amenable number.

133299913 is a deficient number, since it is larger than the sum of its proper divisors (1).

133299913 is an equidigital number, since it uses as much as digits as its factorization.

133299913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 39366, while the sum is 40.

The square root of 133299913 is about 11545.5581502152. The cubic root of 133299913 is about 510.8302675012.

The spelling of 133299913 in words is "one hundred thirty-three million, two hundred ninety-nine thousand, nine hundred thirteen".