133427893 has 2 divisors, whose sum is σ = 133427894. Its totient is φ = 133427892.

The previous prime is 133427891. The next prime is 133427909. The reversal of 133427893 is 398724331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 93257649 + 40170244 = 9657^2 + 6338^2 .

It is a cyclic number.

It is not a de Polignac number, because 133427893 - 2¹ = 133427891 is a prime.

Together with 133427891, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133427891) 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, 66713946 + 66713947.

It is an arithmetic number, because the mean of its divisors is an integer number (66713947).

Almost surely, 2^133427893 is an apocalyptic number.

It is an amenable number.

133427893 is a deficient number, since it is larger than the sum of its proper divisors (1).

133427893 is an equidigital number, since it uses as much as digits as its factorization.

133427893 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 40.

The square root of 133427893 is about 11551.0992117634. The cubic root of 133427893 is about 510.9936963312.

The spelling of 133427893 in words is "one hundred thirty-three million, four hundred twenty-seven thousand, eight hundred ninety-three".