133349987 has 2 divisors, whose sum is σ = 133349988. Its totient is φ = 133349986.

The previous prime is 133349981. The next prime is 133350011. The reversal of 133349987 is 789943331.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 133349987 - 2²² = 129155683 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (133349981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66674993 + 66674994.

It is an arithmetic number, because the mean of its divisors is an integer number (66674994).

Almost surely, 2^133349987 is an apocalyptic number.

133349987 is a deficient number, since it is larger than the sum of its proper divisors (1).

133349987 is an equidigital number, since it uses as much as digits as its factorization.

133349987 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 489888, while the sum is 47.

The square root of 133349987 is about 11547.7264861963. The cubic root of 133349987 is about 510.8942238133.

The spelling of 133349987 in words is "one hundred thirty-three million, three hundred forty-nine thousand, nine hundred eighty-seven".