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422209 is a prime number
BaseRepresentation
bin1100111000101000001
3210110011101
41213011001
5102002314
613014401
73405634
oct1470501
9713141
10422209
11269237
12184401
1311a238
14adc1b
1585174
hex67141

422209 has 2 divisors, whose sum is σ = 422210. Its totient is φ = 422208.

The previous prime is 422203. The next prime is 422231. The reversal of 422209 is 902224.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 418609 + 3600 = 647^2 + 60^2 .

It is a cyclic number.

It is not a de Polignac number, because 422209 - 29 = 421697 is a prime.

It is not a weakly prime, because it can be changed into another prime (422203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211104 + 211105.

It is an arithmetic number, because the mean of its divisors is an integer number (211105).

2422209 is an apocalyptic number.

It is an amenable number.

422209 is a deficient number, since it is larger than the sum of its proper divisors (1).

422209 is an equidigital number, since it uses as much as digits as its factorization.

422209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 422209 is about 649.7761152890. The cubic root of 422209 is about 75.0197873716.

The spelling of 422209 in words is "four hundred twenty-two thousand, two hundred nine".