406147723 has 2 divisors, whose sum is σ = 406147724. Its totient is φ = 406147722.

The previous prime is 406147717. The next prime is 406147747. The reversal of 406147723 is 327741604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406147723 - 2²¹ = 404050571 is a prime.

It is not a weakly prime, because it can be changed into another prime (406147783) 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, 203073861 + 203073862.

It is an arithmetic number, because the mean of its divisors is an integer number (203073862).

Almost surely, 2^406147723 is an apocalyptic number.

406147723 is a deficient number, since it is larger than the sum of its proper divisors (1).

406147723 is an equidigital number, since it uses as much as digits as its factorization.

406147723 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 406147723 is about 20153.1070309270. The cubic root of 406147723 is about 740.5618590216.

The spelling of 406147723 in words is "four hundred six million, one hundred forty-seven thousand, seven hundred twenty-three".