133489671 has 24 divisors (see below), whose sum is σ = 207673344. Its totient is φ = 76048560.

The previous prime is 133489663. The next prime is 133489679. The reversal of 133489671 is 176984331.

It is an interprime number because it is at equal distance from previous prime (133489663) and next prime (133489679).

It is not a de Polignac number, because 133489671 - 2³ = 133489663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133489679) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55116 + ... + 57486.

It is an arithmetic number, because the mean of its divisors is an integer number (8653056).

Almost surely, 2^133489671 is an apocalyptic number.

133489671 is a deficient number, since it is larger than the sum of its proper divisors (74183673).

133489671 is a wasteful number, since it uses less digits than its factorization.

133489671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2771 (or 2764 counting only the distinct ones).

The product of its digits is 108864, while the sum is 42.

The square root of 133489671 is about 11553.7730201004. The cubic root of 133489671 is about 511.0725486536.

The spelling of 133489671 in words is "one hundred thirty-three million, four hundred eighty-nine thousand, six hundred seventy-one".