405321227 has 2 divisors, whose sum is σ = 405321228. Its totient is φ = 405321226.

The previous prime is 405321223. The next prime is 405321229. The reversal of 405321227 is 722123504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405321227 - 2² = 405321223 is a prime.

Together with 405321229, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 405321196 and 405321205.

It is not a weakly prime, because it can be changed into another prime (405321221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202660613 + 202660614.

It is an arithmetic number, because the mean of its divisors is an integer number (202660614).

Almost surely, 2^405321227 is an apocalyptic number.

405321227 is a deficient number, since it is larger than the sum of its proper divisors (1).

405321227 is an equidigital number, since it uses as much as digits as its factorization.

405321227 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 405321227 is about 20132.5911645769. The cubic root of 405321227 is about 740.0591789780.

The spelling of 405321227 in words is "four hundred five million, three hundred twenty-one thousand, two hundred twenty-seven".