133897069 has 2 divisors, whose sum is σ = 133897070. Its totient is φ = 133897068.

The previous prime is 133897067. The next prime is 133897073. The reversal of 133897069 is 960798331.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 117397225 + 16499844 = 10835^2 + 4062^2 .

It is a cyclic number.

It is not a de Polignac number, because 133897069 - 2¹ = 133897067 is a prime.

It is a super-2 number, since 2×133897069² = 35856850173581522, which contains 22 as substring.

Together with 133897067, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133897061) 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, 66948534 + 66948535.

It is an arithmetic number, because the mean of its divisors is an integer number (66948535).

Almost surely, 2^133897069 is an apocalyptic number.

It is an amenable number.

133897069 is a deficient number, since it is larger than the sum of its proper divisors (1).

133897069 is an equidigital number, since it uses as much as digits as its factorization.

133897069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 244944, while the sum is 46.

The square root of 133897069 is about 11571.3901066380. The cubic root of 133897069 is about 511.5919358557.

The spelling of 133897069 in words is "one hundred thirty-three million, eight hundred ninety-seven thousand, sixty-nine".