133797889 has 2 divisors, whose sum is σ = 133797890. Its totient is φ = 133797888.

The previous prime is 133797887. The next prime is 133797907. The reversal of 133797889 is 988797331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126180289 + 7617600 = 11233^2 + 2760^2 .

It is a cyclic number.

It is not a de Polignac number, because 133797889 - 2¹ = 133797887 is a prime.

Together with 133797887, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (133797887) 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, 66898944 + 66898945.

It is an arithmetic number, because the mean of its divisors is an integer number (66898945).

Almost surely, 2^133797889 is an apocalyptic number.

It is an amenable number.

133797889 is a deficient number, since it is larger than the sum of its proper divisors (1).

133797889 is an equidigital number, since it uses as much as digits as its factorization.

133797889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2286144, while the sum is 55.

The square root of 133797889 is about 11567.1037429427. The cubic root of 133797889 is about 511.4655894970.

The spelling of 133797889 in words is "one hundred thirty-three million, seven hundred ninety-seven thousand, eight hundred eighty-nine".