133434947 has 2 divisors, whose sum is σ = 133434948. Its totient is φ = 133434946.

The previous prime is 133434911. The next prime is 133434953. The reversal of 133434947 is 749434331.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 133434947 - 2⁶ = 133434883 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 133434947.

It is not a weakly prime, because it can be changed into another prime (133434907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66717473 + 66717474.

It is an arithmetic number, because the mean of its divisors is an integer number (66717474).

Almost surely, 2^133434947 is an apocalyptic number.

133434947 is a deficient number, since it is larger than the sum of its proper divisors (1).

133434947 is an equidigital number, since it uses as much as digits as its factorization.

133434947 is an evil number, because the sum of its binary digits is even.

The product of its digits is 108864, while the sum is 38.

The square root of 133434947 is about 11551.4045466341. The cubic root of 133434947 is about 511.0027011600.

The spelling of 133434947 in words is "one hundred thirty-three million, four hundred thirty-four thousand, nine hundred forty-seven".