409222409 has 2 divisors, whose sum is σ = 409222410. Its totient is φ = 409222408.

The previous prime is 409222379. The next prime is 409222441. The reversal of 409222409 is 904222904.

It is an a-pointer prime, because the next prime (409222441) can be obtained adding 409222409 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., 388090000 + 21132409 = 19700^2 + 4597^2 .

It is a cyclic number.

It is not a de Polignac number, because 409222409 - 2²⁰ = 408173833 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (409221409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204611204 + 204611205.

It is an arithmetic number, because the mean of its divisors is an integer number (204611205).

Almost surely, 2^409222409 is an apocalyptic number.

It is an amenable number.

409222409 is a deficient number, since it is larger than the sum of its proper divisors (1).

409222409 is an equidigital number, since it uses as much as digits as its factorization.

409222409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 409222409 is about 20229.2463774605. The cubic root of 409222409 is about 742.4259372064.

The spelling of 409222409 in words is "four hundred nine million, two hundred twenty-two thousand, four hundred nine".