133689467 has 2 divisors, whose sum is σ = 133689468. Its totient is φ = 133689466.

The previous prime is 133689463. The next prime is 133689487. The reversal of 133689467 is 764986331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133689467 - 2² = 133689463 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133689461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66844733 + 66844734.

It is an arithmetic number, because the mean of its divisors is an integer number (66844734).

Almost surely, 2^133689467 is an apocalyptic number.

133689467 is a deficient number, since it is larger than the sum of its proper divisors (1).

133689467 is an equidigital number, since it uses as much as digits as its factorization.

133689467 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 47.

The square root of 133689467 is about 11562.4161402364. The cubic root of 133689467 is about 511.3273982091.

The spelling of 133689467 in words is "one hundred thirty-three million, six hundred eighty-nine thousand, four hundred sixty-seven".