133486403 has 4 divisors (see below), whose sum is σ = 137792448. Its totient is φ = 129180360.

The previous prime is 133486393. The next prime is 133486421. The reversal of 133486403 is 304684331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 304684331 = 7 ⋅43526333.

It is a cyclic number.

It is not a de Polignac number, because 133486403 - 2⁴ = 133486387 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 133486403.

It is not an unprimeable number, because it can be changed into a prime (133486433) 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 3 ways as a sum of consecutive naturals, for example, 2152976 + ... + 2153037.

It is an arithmetic number, because the mean of its divisors is an integer number (34448112).

Almost surely, 2^133486403 is an apocalyptic number.

133486403 is a deficient number, since it is larger than the sum of its proper divisors (4306045).

133486403 is an equidigital number, since it uses as much as digits as its factorization.

133486403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4306044.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 133486403 is about 11553.6315935726. The cubic root of 133486403 is about 511.0683780470.

The spelling of 133486403 in words is "one hundred thirty-three million, four hundred eighty-six thousand, four hundred three".