405210229 has 2 divisors, whose sum is σ = 405210230. Its totient is φ = 405210228.

The previous prime is 405210217. The next prime is 405210263. The reversal of 405210229 is 922012504.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400080004 + 5130225 = 20002^2 + 2265^2 .

It is a cyclic number.

It is not a de Polignac number, because 405210229 - 2²¹ = 403113077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405210329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202605114 + 202605115.

It is an arithmetic number, because the mean of its divisors is an integer number (202605115).

Almost surely, 2^405210229 is an apocalyptic number.

It is an amenable number.

405210229 is a deficient number, since it is larger than the sum of its proper divisors (1).

405210229 is an equidigital number, since it uses as much as digits as its factorization.

405210229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 405210229 is about 20129.8343013548. The cubic root of 405210229 is about 739.9916172656.

The spelling of 405210229 in words is "four hundred five million, two hundred ten thousand, two hundred twenty-nine".