406320907 has 2 divisors, whose sum is σ = 406320908. Its totient is φ = 406320906.

The previous prime is 406320881. The next prime is 406320923. The reversal of 406320907 is 709023604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406320907 is a prime.

It is not a weakly prime, because it can be changed into another prime (406320107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203160453 + 203160454.

It is an arithmetic number, because the mean of its divisors is an integer number (203160454).

Almost surely, 2^406320907 is an apocalyptic number.

406320907 is a deficient number, since it is larger than the sum of its proper divisors (1).

406320907 is an equidigital number, since it uses as much as digits as its factorization.

406320907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 406320907 is about 20157.4032801847. The cubic root of 406320907 is about 740.6671041764.

The spelling of 406320907 in words is "four hundred six million, three hundred twenty thousand, nine hundred seven".