133339784 has 8 divisors (see below), whose sum is σ = 250012110. Its totient is φ = 66669888.

The previous prime is 133339769. The next prime is 133339807. The reversal of 133339784 is 487933331.

It can be written as a sum of positive squares in only one way, i.e., 129458884 + 3880900 = 11378^2 + 1970^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8333729 + ... + 8333744.

Almost surely, 2^133339784 is an apocalyptic number.

It is an amenable number.

133339784 is a deficient number, since it is larger than the sum of its proper divisors (116672326).

133339784 is a wasteful number, since it uses less digits than its factorization.

133339784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16667479 (or 16667475 counting only the distinct ones).

The product of its digits is 163296, while the sum is 41.

The square root of 133339784 is about 11547.2847024744. The cubic root of 133339784 is about 510.8811934740.

The spelling of 133339784 in words is "one hundred thirty-three million, three hundred thirty-nine thousand, seven hundred eighty-four".