133880447 has 8 divisors (see below), whose sum is σ = 139903200. Its totient is φ = 127874560.

The previous prime is 133880437. The next prime is 133880473. The reversal of 133880447 is 744088331.

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 133880447 - 2¹⁰ = 133879423 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 133880447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133880407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13679 + ... + 21327.

It is an arithmetic number, because the mean of its divisors is an integer number (17487900).

Almost surely, 2^133880447 is an apocalyptic number.

133880447 is a deficient number, since it is larger than the sum of its proper divisors (6022753).

133880447 is an equidigital number, since it uses as much as digits as its factorization.

133880447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8433.

The product of its (nonzero) digits is 64512, while the sum is 38.

The square root of 133880447 is about 11570.6718473907. The cubic root of 133880447 is about 511.5707652826.

The spelling of 133880447 in words is "one hundred thirty-three million, eight hundred eighty thousand, four hundred forty-seven".