406219799 has 2 divisors, whose sum is σ = 406219800. Its totient is φ = 406219798.

The previous prime is 406219789. The next prime is 406219823. The reversal of 406219799 is 997912604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406219799 - 2²⁸ = 137784343 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406219739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203109899 + 203109900.

It is an arithmetic number, because the mean of its divisors is an integer number (203109900).

Almost surely, 2^406219799 is an apocalyptic number.

406219799 is a deficient number, since it is larger than the sum of its proper divisors (1).

406219799 is an equidigital number, since it uses as much as digits as its factorization.

406219799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 244944, while the sum is 47.

The square root of 406219799 is about 20154.8951622180. The cubic root of 406219799 is about 740.6056637560.

The spelling of 406219799 in words is "four hundred six million, two hundred nineteen thousand, seven hundred ninety-nine".