418985947 has 2 divisors, whose sum is σ = 418985948. Its totient is φ = 418985946.

The previous prime is 418985921. The next prime is 418985951. The reversal of 418985947 is 749589814.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 418985947 - 2²³ = 410597339 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (418985977) 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 as a sum of consecutive naturals, namely, 209492973 + 209492974.

It is an arithmetic number, because the mean of its divisors is an integer number (209492974).

Almost surely, 2^418985947 is an apocalyptic number.

418985947 is a deficient number, since it is larger than the sum of its proper divisors (1).

418985947 is an equidigital number, since it uses as much as digits as its factorization.

418985947 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2903040, while the sum is 55.

The square root of 418985947 is about 20469.1462205926. The cubic root of 418985947 is about 748.2840455873.

The spelling of 418985947 in words is "four hundred eighteen million, nine hundred eighty-five thousand, nine hundred forty-seven".