133000444 has 12 divisors (see below), whose sum is σ = 242870544. Its totient is φ = 63608864.

The previous prime is 133000423. The next prime is 133000453. The reversal of 133000444 is 444000331.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 722737 + ... + 722920.

It is an arithmetic number, because the mean of its divisors is an integer number (20239212).

Almost surely, 2^133000444 is an apocalyptic number.

It is an amenable number.

133000444 is a deficient number, since it is larger than the sum of its proper divisors (109870100).

133000444 is a wasteful number, since it uses less digits than its factorization.

133000444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1445684 (or 1445682 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 133000444 is about 11532.5818444961. The cubic root of 133000444 is about 510.4474402156.

Adding to 133000444 its reverse (444000331), we get a palindrome (577000775).

The spelling of 133000444 in words is "one hundred thirty-three million, four hundred forty-four", and thus it is an aban number.