133486487 has 4 divisors (see below), whose sum is σ = 133916016. Its totient is φ = 133056960.

The previous prime is 133486469. The next prime is 133486513. The reversal of 133486487 is 784684331.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784684331 = 3469 ⋅226199.

It is a cyclic number.

It is not a de Polignac number, because 133486487 - 2⁸ = 133486231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (133486427) 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 3 ways as a sum of consecutive naturals, for example, 214298 + ... + 214919.

It is an arithmetic number, because the mean of its divisors is an integer number (33479004).

Almost surely, 2^133486487 is an apocalyptic number.

133486487 is a deficient number, since it is larger than the sum of its proper divisors (429529).

133486487 is an equidigital number, since it uses as much as digits as its factorization.

133486487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429528.

The product of its digits is 387072, while the sum is 44.

The square root of 133486487 is about 11553.6352287927. The cubic root of 133486487 is about 511.0684852483.

The spelling of 133486487 in words is "one hundred thirty-three million, four hundred eighty-six thousand, four hundred eighty-seven".