4078289 has 4 divisors (see below), whose sum is σ = 4085556. Its totient is φ = 4071024.

The previous prime is 4078273. The next prime is 4078301. The reversal of 4078289 is 9828704.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 46225 + 4032064 = 215^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 4078289 - 2⁴ = 4078273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4078219) 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 in 3 ways as a sum of consecutive naturals, for example, 2714 + ... + 3939.

It is an arithmetic number, because the mean of its divisors is an integer number (1021389).

Almost surely, 2^4078289 is an apocalyptic number.

It is an amenable number.

4078289 is a deficient number, since it is larger than the sum of its proper divisors (7267).

4078289 is an equidigital number, since it uses as much as digits as its factorization.

4078289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7266.

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

The square root of 4078289 is about 2019.4774076478. The cubic root of 4078289 is about 159.7690548333.

The spelling of 4078289 in words is "four million, seventy-eight thousand, two hundred eighty-nine".