133099969 has 2 divisors, whose sum is σ = 133099970. Its totient is φ = 133099968.

The previous prime is 133099961. The next prime is 133099973. The reversal of 133099969 is 969990331.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 116899344 + 16200625 = 10812^2 + 4025^2 .

It is an emirp because it is prime and its reverse (969990331) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 133099969 - 2³ = 133099961 is a prime.

It is a super-2 number, since 2×133099969² = 35431203495601922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (133099961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66549984 + 66549985.

It is an arithmetic number, because the mean of its divisors is an integer number (66549985).

Almost surely, 2^133099969 is an apocalyptic number.

It is an amenable number.

133099969 is a deficient number, since it is larger than the sum of its proper divisors (1).

133099969 is an equidigital number, since it uses as much as digits as its factorization.

133099969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 354294, while the sum is 49.

The square root of 133099969 is about 11536.8959863561. The cubic root of 133099969 is about 510.5747320585.

The spelling of 133099969 in words is "one hundred thirty-three million, ninety-nine thousand, nine hundred sixty-nine".