133797709 has 2 divisors, whose sum is σ = 133797710. Its totient is φ = 133797708.

The previous prime is 133797691. The next prime is 133797731. The reversal of 133797709 is 907797331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116575209 + 17222500 = 10797^2 + 4150^2 .

It is a cyclic number.

It is not a de Polignac number, because 133797709 - 2⁹ = 133797197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133791709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66898854 + 66898855.

It is an arithmetic number, because the mean of its divisors is an integer number (66898855).

Almost surely, 2^133797709 is an apocalyptic number.

It is an amenable number.

133797709 is a deficient number, since it is larger than the sum of its proper divisors (1).

133797709 is an equidigital number, since it uses as much as digits as its factorization.

133797709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 250047, while the sum is 46.

The square root of 133797709 is about 11567.0959622543. The cubic root of 133797709 is about 511.4653601366.

The spelling of 133797709 in words is "one hundred thirty-three million, seven hundred ninety-seven thousand, seven hundred nine".