133844947 has 8 divisors (see below), whose sum is σ = 142203600. Its totient is φ = 125735904.

The previous prime is 133844929. The next prime is 133844993. The reversal of 133844947 is 749448331.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 133844947 - 2²³ = 125456339 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (133944947) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 61297 + ... + 63442.

It is an arithmetic number, because the mean of its divisors is an integer number (17775450).

Almost surely, 2^133844947 is an apocalyptic number.

133844947 is a deficient number, since it is larger than the sum of its proper divisors (8358653).

133844947 is a wasteful number, since it uses less digits than its factorization.

133844947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124805.

The product of its digits is 290304, while the sum is 43.

The square root of 133844947 is about 11569.1376947463. The cubic root of 133844947 is about 511.5255449187.

The spelling of 133844947 in words is "one hundred thirty-three million, eight hundred forty-four thousand, nine hundred forty-seven".