133912069 has 2 divisors, whose sum is σ = 133912070. Its totient is φ = 133912068.

The previous prime is 133912063. The next prime is 133912073. The reversal of 133912069 is 960219331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78588225 + 55323844 = 8865^2 + 7438^2 .

It is a cyclic number.

It is not a de Polignac number, because 133912069 - 2²⁵ = 100357637 is a prime.

It is a super-2 number, since 2×133912069² = 35864884447721522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133912063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66956034 + 66956035.

It is an arithmetic number, because the mean of its divisors is an integer number (66956035).

Almost surely, 2^133912069 is an apocalyptic number.

It is an amenable number.

133912069 is a deficient number, since it is larger than the sum of its proper divisors (1).

133912069 is an equidigital number, since it uses as much as digits as its factorization.

133912069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 34.

The square root of 133912069 is about 11572.0382387892. The cubic root of 133912069 is about 511.6110390682.

The spelling of 133912069 in words is "one hundred thirty-three million, nine hundred twelve thousand, sixty-nine".