133879806 has 24 divisors (see below), whose sum is σ = 290762784. Its totient is φ = 44520480.

The previous prime is 133879789. The next prime is 133879841. The reversal of 133879806 is 608978331.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 871 + ... + 16386.

It is an arithmetic number, because the mean of its divisors is an integer number (12115116).

Almost surely, 2^133879806 is an apocalyptic number.

133879806 is an abundant number, since it is smaller than the sum of its proper divisors (156882978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

133879806 is a wasteful number, since it uses less digits than its factorization.

133879806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17696 (or 17693 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 133879806 is about 11570.6441480153. The cubic root of 133879806 is about 511.5699488393.

The spelling of 133879806 in words is "one hundred thirty-three million, eight hundred seventy-nine thousand, eight hundred six".