406747247 has 2 divisors, whose sum is σ = 406747248. Its totient is φ = 406747246.

The previous prime is 406747217. The next prime is 406747261. The reversal of 406747247 is 742747604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406747247 - 2¹⁶ = 406681711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406747217) 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, 203373623 + 203373624.

It is an arithmetic number, because the mean of its divisors is an integer number (203373624).

Almost surely, 2^406747247 is an apocalyptic number.

406747247 is a deficient number, since it is larger than the sum of its proper divisors (1).

406747247 is an equidigital number, since it uses as much as digits as its factorization.

406747247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 263424, while the sum is 41.

The square root of 406747247 is about 20167.9757784464. The cubic root of 406747247 is about 740.9260666758.

The spelling of 406747247 in words is "four hundred six million, seven hundred forty-seven thousand, two hundred forty-seven".