406427117 has 2 divisors, whose sum is σ = 406427118. Its totient is φ = 406427116.

The previous prime is 406427111. The next prime is 406427149. The reversal of 406427117 is 711724604.

It is an a-pointer prime, because the next prime (406427149) can be obtained adding 406427117 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 405055876 + 1371241 = 20126^2 + 1171^2 .

It is a cyclic number.

It is not a de Polignac number, because 406427117 - 2⁸ = 406426861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406427111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203213558 + 203213559.

It is an arithmetic number, because the mean of its divisors is an integer number (203213559).

Almost surely, 2^406427117 is an apocalyptic number.

It is an amenable number.

406427117 is a deficient number, since it is larger than the sum of its proper divisors (1).

406427117 is an equidigital number, since it uses as much as digits as its factorization.

406427117 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 406427117 is about 20160.0376239728. The cubic root of 406427117 is about 740.7316339594.

The spelling of 406427117 in words is "four hundred six million, four hundred twenty-seven thousand, one hundred seventeen".