4278209459 has 2 divisors, whose sum is σ = 4278209460. Its totient is φ = 4278209458.

The previous prime is 4278209431. The next prime is 4278209473. The reversal of 4278209459 is 9549028724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4278209459 - 2²⁴ = 4261432243 is a prime.

It is not a weakly prime, because it can be changed into another prime (4278209479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139104729 + 2139104730.

It is an arithmetic number, because the mean of its divisors is an integer number (2139104730).

Almost surely, 2^4278209459 is an apocalyptic number.

4278209459 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278209459 is an equidigital number, since it uses as much as digits as its factorization.

4278209459 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 4278209459 is about 65408.0228947489. The cubic root of 4278209459 is about 1623.3818317258.

The spelling of 4278209459 in words is "four billion, two hundred seventy-eight million, two hundred nine thousand, four hundred fifty-nine".