406438227 has 48 divisors (see below), whose sum is σ = 675118080. Its totient is φ = 233404416.

The previous prime is 406438217. The next prime is 406438237. The reversal of 406438227 is 722834604.

406438227 is a `hidden beast` number, since 4 + 0 + 643 + 8 + 2 + 2 + 7 = 666.

It is an interprime number because it is at equal distance from previous prime (406438217) and next prime (406438237).

It is not a de Polignac number, because 406438227 - 2¹² = 406434131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406438191 and 406438200.

It is not an unprimeable number, because it can be changed into a prime (406438217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 251799 + ... + 253407.

It is an arithmetic number, because the mean of its divisors is an integer number (14064960).

Almost surely, 2^406438227 is an apocalyptic number.

406438227 is a deficient number, since it is larger than the sum of its proper divisors (268679853).

406438227 is a wasteful number, since it uses less digits than its factorization.

406438227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772 (or 1769 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 406438227 is about 20160.3131672105. The cubic root of 406438227 is about 740.7383833888.

The spelling of 406438227 in words is "four hundred six million, four hundred thirty-eight thousand, two hundred twenty-seven".