4278223 has 2 divisors, whose sum is σ = 4278224. Its totient is φ = 4278222.

The previous prime is 4278193. The next prime is 4278229. The reversal of 4278223 is 3228724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4278223 - 2¹³ = 4270031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4278191 and 4278200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4278229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139111 + 2139112.

It is an arithmetic number, because the mean of its divisors is an integer number (2139112).

Almost surely, 2^4278223 is an apocalyptic number.

4278223 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278223 is an equidigital number, since it uses as much as digits as its factorization.

4278223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 28.

The square root of 4278223 is about 2068.3865692853. The cubic root of 4278223 is about 162.3383544451.

The spelling of 4278223 in words is "four million, two hundred seventy-eight thousand, two hundred twenty-three".