133444697 has 2 divisors, whose sum is σ = 133444698. Its totient is φ = 133444696.

The previous prime is 133444693. The next prime is 133444711. The reversal of 133444697 is 796444331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 129868816 + 3575881 = 11396^2 + 1891^2 .

It is an emirp because it is prime and its reverse (796444331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133444697 - 2² = 133444693 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133444691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66722348 + 66722349.

It is an arithmetic number, because the mean of its divisors is an integer number (66722349).

Almost surely, 2^133444697 is an apocalyptic number.

It is an amenable number.

133444697 is a deficient number, since it is larger than the sum of its proper divisors (1).

133444697 is an equidigital number, since it uses as much as digits as its factorization.

133444697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 41.

The square root of 133444697 is about 11551.8265655263. The cubic root of 133444697 is about 511.0151470624.

The spelling of 133444697 in words is "one hundred thirty-three million, four hundred forty-four thousand, six hundred ninety-seven".