133989177 has 32 divisors (see below), whose sum is σ = 211968000. Its totient is φ = 75233424.

The previous prime is 133989157. The next prime is 133989221. The reversal of 133989177 is 771989331.

It is not a de Polignac number, because 133989177 - 2⁷ = 133989049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133989137) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 59608 + ... + 61814.

It is an arithmetic number, because the mean of its divisors is an integer number (6624000).

Almost surely, 2^133989177 is an apocalyptic number.

It is an amenable number.

133989177 is a deficient number, since it is larger than the sum of its proper divisors (77978823).

133989177 is an equidigital number, since it uses as much as digits as its factorization.

133989177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2290 (or 2276 counting only the distinct ones).

The product of its digits is 285768, while the sum is 48.

The square root of 133989177 is about 11575.3694109519. The cubic root of 133989177 is about 511.7092172606.

The spelling of 133989177 in words is "one hundred thirty-three million, nine hundred eighty-nine thousand, one hundred seventy-seven".