407907947 has 2 divisors, whose sum is σ = 407907948. Its totient is φ = 407907946.

The previous prime is 407907937. The next prime is 407907949. The reversal of 407907947 is 749709704.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 407907947 - 2¹⁰ = 407906923 is a prime.

Together with 407907949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (407907949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203953973 + 203953974.

It is an arithmetic number, because the mean of its divisors is an integer number (203953974).

Almost surely, 2^407907947 is an apocalyptic number.

407907947 is a deficient number, since it is larger than the sum of its proper divisors (1).

407907947 is an equidigital number, since it uses as much as digits as its factorization.

407907947 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 444528, while the sum is 47.

The square root of 407907947 is about 20196.7310968879. The cubic root of 407907947 is about 741.6301699052.

The spelling of 407907947 in words is "four hundred seven million, nine hundred seven thousand, nine hundred forty-seven".