4278628489 has 2 divisors, whose sum is σ = 4278628490. Its totient is φ = 4278628488.

The previous prime is 4278628457. The next prime is 4278628517. The reversal of 4278628489 is 9848268724.

4278628489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2404431225 + 1874197264 = 49035^2 + 43292^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278628489 - 2⁵ = 4278628457 is a prime.

It is not a weakly prime, because it can be changed into another prime (4278628439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139314244 + 2139314245.

It is an arithmetic number, because the mean of its divisors is an integer number (2139314245).

Almost surely, 2^4278628489 is an apocalyptic number.

It is an amenable number.

4278628489 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278628489 is an equidigital number, since it uses as much as digits as its factorization.

4278628489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12386304, while the sum is 58.

The square root of 4278628489 is about 65411.2260166403. The cubic root of 4278628489 is about 1623.4348308046.

The spelling of 4278628489 in words is "four billion, two hundred seventy-eight million, six hundred twenty-eight thousand, four hundred eighty-nine".