133397293 has 2 divisors, whose sum is σ = 133397294. Its totient is φ = 133397292.

The previous prime is 133397279. The next prime is 133397357. The reversal of 133397293 is 392793331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69189124 + 64208169 = 8318^2 + 8013^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133397293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133397093) 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, 66698646 + 66698647.

It is an arithmetic number, because the mean of its divisors is an integer number (66698647).

Almost surely, 2^133397293 is an apocalyptic number.

It is an amenable number.

133397293 is a deficient number, since it is larger than the sum of its proper divisors (1).

133397293 is an equidigital number, since it uses as much as digits as its factorization.

133397293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 40.

The square root of 133397293 is about 11549.7745865450. The cubic root of 133397293 is about 510.9546300304.

The spelling of 133397293 in words is "one hundred thirty-three million, three hundred ninety-seven thousand, two hundred ninety-three".