133488985 has 24 divisors (see below), whose sum is σ = 190688256. Its totient is φ = 89399520.

The previous prime is 133488961. The next prime is 133488997. The reversal of 133488985 is 589884331.

It is not a de Polignac number, because 133488985 - 2⁹ = 133488473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4200 + ... + 16870.

It is an arithmetic number, because the mean of its divisors is an integer number (7945344).

Almost surely, 2^133488985 is an apocalyptic number.

It is an amenable number.

133488985 is a deficient number, since it is larger than the sum of its proper divisors (57199271).

133488985 is a wasteful number, since it uses less digits than its factorization.

133488985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12733 (or 12726 counting only the distinct ones).

The product of its digits is 829440, while the sum is 49.

The square root of 133488985 is about 11553.7433327905. The cubic root of 133488985 is about 511.0716731892.

The spelling of 133488985 in words is "one hundred thirty-three million, four hundred eighty-eight thousand, nine hundred eighty-five".