133898117 has 2 divisors, whose sum is σ = 133898118. Its totient is φ = 133898116.

The previous prime is 133898099. The next prime is 133898129. The reversal of 133898117 is 711898331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115971361 + 17926756 = 10769^2 + 4234^2 .

It is a cyclic number.

It is not a de Polignac number, because 133898117 - 2⁸ = 133897861 is a prime.

It is a super-2 number, since 2×133898117² = 35857411472291378, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133898197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66949058 + 66949059.

It is an arithmetic number, because the mean of its divisors is an integer number (66949059).

Almost surely, 2^133898117 is an apocalyptic number.

It is an amenable number.

133898117 is a deficient number, since it is larger than the sum of its proper divisors (1).

133898117 is an equidigital number, since it uses as much as digits as its factorization.

133898117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36288, while the sum is 41.

The square root of 133898117 is about 11571.4353906505. The cubic root of 133898117 is about 511.5932705798.

The spelling of 133898117 in words is "one hundred thirty-three million, eight hundred ninety-eight thousand, one hundred seventeen".