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8144219 is a prime number
BaseRepresentation
bin11111000100010101011011
3120022202202202
4133010111123
54041103334
6450320415
7126140036
oct37042533
916282682
108144219
114662966
12288910b
1318c1c85
14112001d
15aad17e
hex7c455b

8144219 has 2 divisors, whose sum is σ = 8144220. Its totient is φ = 8144218.

The previous prime is 8144167. The next prime is 8144221. The reversal of 8144219 is 9124418.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8144219 - 212 = 8140123 is a prime.

It is a super-2 number, since 2×81442192 = 132656606239922, which contains 22 as substring.

Together with 8144221, 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 = 8144191 and 8144200.

It is not a weakly prime, because it can be changed into another prime (8104219) 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 as a sum of consecutive naturals, namely, 4072109 + 4072110.

It is an arithmetic number, because the mean of its divisors is an integer number (4072110).

Almost surely, 28144219 is an apocalyptic number.

8144219 is a deficient number, since it is larger than the sum of its proper divisors (1).

8144219 is an equidigital number, since it uses as much as digits as its factorization.

8144219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2304, while the sum is 29.

The square root of 8144219 is about 2853.8078071237. The cubic root of 8144219 is about 201.1946745544.

The spelling of 8144219 in words is "eight million, one hundred forty-four thousand, two hundred nineteen".