406427111 has 2 divisors, whose sum is σ = 406427112. Its totient is φ = 406427110.

The previous prime is 406427071. The next prime is 406427117. The reversal of 406427111 is 111724604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406427111 - 2²⁶ = 339318247 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406427117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203213555 + 203213556.

It is an arithmetic number, because the mean of its divisors is an integer number (203213556).

Almost surely, 2^406427111 is an apocalyptic number.

406427111 is a deficient number, since it is larger than the sum of its proper divisors (1).

406427111 is an equidigital number, since it uses as much as digits as its factorization.

406427111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 406427111 is about 20160.0374751636. The cubic root of 406427111 is about 740.7316303143.

The spelling of 406427111 in words is "four hundred six million, four hundred twenty-seven thousand, one hundred eleven".