133998836 has 12 divisors (see below), whose sum is σ = 239951712. Its totient is φ = 65441208.

The previous prime is 133998817. The next prime is 133998847. The reversal of 133998836 is 638899331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 389360 + ... + 389703.

It is an arithmetic number, because the mean of its divisors is an integer number (19995976).

Almost surely, 2^133998836 is an apocalyptic number.

It is an amenable number.

133998836 is a deficient number, since it is larger than the sum of its proper divisors (105952876).

133998836 is a wasteful number, since it uses less digits than its factorization.

133998836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779110 (or 779108 counting only the distinct ones).

The product of its digits is 839808, while the sum is 50.

The square root of 133998836 is about 11575.7866255387. The cubic root of 133998836 is about 511.7215129815.

The spelling of 133998836 in words is "one hundred thirty-three million, nine hundred ninety-eight thousand, eight hundred thirty-six".