133391463 has 8 divisors (see below), whose sum is σ = 180360576. Its totient is φ = 87675000.

The previous prime is 133391431. The next prime is 133391471. The reversal of 133391463 is 364193331.

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

It is not a de Polignac number, because 133391463 - 2⁵ = 133391431 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133391563) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 312913 + ... + 313338.

It is an arithmetic number, because the mean of its divisors is an integer number (22545072).

Almost surely, 2^133391463 is an apocalyptic number.

133391463 is a deficient number, since it is larger than the sum of its proper divisors (46969113).

133391463 is an equidigital number, since it uses as much as digits as its factorization.

133391463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626325.

The product of its digits is 17496, while the sum is 33.

The square root of 133391463 is about 11549.5221979093. The cubic root of 133391463 is about 510.9471863289.

The spelling of 133391463 in words is "one hundred thirty-three million, three hundred ninety-one thousand, four hundred sixty-three".