4278089 has 2 divisors, whose sum is σ = 4278090. Its totient is φ = 4278088.

The previous prime is 4278077. The next prime is 4278091. The reversal of 4278089 is 9808724.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4020025 + 258064 = 2005^2 + 508^2 .

It is a cyclic number.

It is not a de Polignac number, because 4278089 - 2⁴ = 4278073 is a prime.

It is a super-3 number, since 3×4278089³ (a number of 21 digits) contains 333 as substring.

Together with 4278091, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (4278049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2139044 + 2139045.

It is an arithmetic number, because the mean of its divisors is an integer number (2139045).

Almost surely, 2^4278089 is an apocalyptic number.

It is an amenable number.

4278089 is a deficient number, since it is larger than the sum of its proper divisors (1).

4278089 is an equidigital number, since it uses as much as digits as its factorization.

4278089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 4278089 is about 2068.3541766342. The cubic root of 4278089 is about 162.3366595384.

It can be divided in two parts, 42780 and 89, that multiplied together give a triangular number (3807420 = T₂₇₅₉).

The spelling of 4278089 in words is "four million, two hundred seventy-eight thousand, eighty-nine".