133804487 has 2 divisors, whose sum is σ = 133804488. Its totient is φ = 133804486.

The previous prime is 133804459. The next prime is 133804511. The reversal of 133804487 is 784408331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133804487 - 2⁶ = 133804423 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133804487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133804417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66902243 + 66902244.

It is an arithmetic number, because the mean of its divisors is an integer number (66902244).

Almost surely, 2^133804487 is an apocalyptic number.

133804487 is a deficient number, since it is larger than the sum of its proper divisors (1).

133804487 is an equidigital number, since it uses as much as digits as its factorization.

133804487 is an evil number, because the sum of its binary digits is even.

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

The square root of 133804487 is about 11567.3889447878. The cubic root of 133804487 is about 511.4739966912.

The spelling of 133804487 in words is "one hundred thirty-three million, eight hundred four thousand, four hundred eighty-seven".