133949853 has 12 divisors (see below), whose sum is σ = 199724928. Its totient is φ = 86419080.

The previous prime is 133949833. The next prime is 133949863. The reversal of 133949853 is 358949331.

It is not a de Polignac number, because 133949853 - 2⁶ = 133949789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 133949799 and 133949808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133949813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 239775 + ... + 240332.

It is an arithmetic number, because the mean of its divisors is an integer number (16643744).

Almost surely, 2^133949853 is an apocalyptic number.

It is an amenable number.

133949853 is a deficient number, since it is larger than the sum of its proper divisors (65775075).

133949853 is a wasteful number, since it uses less digits than its factorization.

133949853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480144 (or 480141 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 133949853 is about 11573.6706796072. The cubic root of 133949853 is about 511.6591524654.

The spelling of 133949853 in words is "one hundred thirty-three million, nine hundred forty-nine thousand, eight hundred fifty-three".