133396091 has 2 divisors, whose sum is σ = 133396092. Its totient is φ = 133396090.

The previous prime is 133396057. The next prime is 133396111. The reversal of 133396091 is 190693331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133396091 - 2¹⁸ = 133133947 is a prime.

It is not a weakly prime, because it can be changed into another prime (133396031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66698045 + 66698046.

It is an arithmetic number, because the mean of its divisors is an integer number (66698046).

Almost surely, 2^133396091 is an apocalyptic number.

133396091 is a deficient number, since it is larger than the sum of its proper divisors (1).

133396091 is an equidigital number, since it uses as much as digits as its factorization.

133396091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13122, while the sum is 35.

The square root of 133396091 is about 11549.7225507802. The cubic root of 133396091 is about 510.9530953433.

The spelling of 133396091 in words is "one hundred thirty-three million, three hundred ninety-six thousand, ninety-one".