406447 has 2 divisors, whose sum is σ = 406448. Its totient is φ = 406446.

The previous prime is 406423. The next prime is 406481. The reversal of 406447 is 744604.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406447 - 2¹¹ = 404399 is a prime.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 406447.

It is not a weakly prime, because it can be changed into another prime (406247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203223 + 203224.

It is an arithmetic number, because the mean of its divisors is an integer number (203224).

2⁴⁰⁶⁴⁴⁷ is an apocalyptic number.

406447 is a deficient number, since it is larger than the sum of its proper divisors (1).

406447 is an equidigital number, since it uses as much as digits as its factorization.

406447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 406447 is about 637.5319599832. The cubic root of 406447 is about 74.0743712982.

The spelling of 406447 in words is "four hundred six thousand, four hundred forty-seven".