133409417 has 2 divisors, whose sum is σ = 133409418. Its totient is φ = 133409416.

The previous prime is 133409389. The next prime is 133409429. The reversal of 133409417 is 714904331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132802576 + 606841 = 11524^2 + 779^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133409417 is a prime.

It is not a weakly prime, because it can be changed into another prime (133408417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66704708 + 66704709.

It is an arithmetic number, because the mean of its divisors is an integer number (66704709).

Almost surely, 2^133409417 is an apocalyptic number.

It is an amenable number.

133409417 is a deficient number, since it is larger than the sum of its proper divisors (1).

133409417 is an equidigital number, since it uses as much as digits as its factorization.

133409417 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 133409417 is about 11550.2994333480. The cubic root of 133409417 is about 510.9701091708.

The spelling of 133409417 in words is "one hundred thirty-three million, four hundred nine thousand, four hundred seventeen".