4239089 has 4 divisors (see below), whose sum is σ = 4243620. Its totient is φ = 4234560.

The previous prime is 4239077. The next prime is 4239101. The reversal of 4239089 is 9809324.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (4239077) and next prime (4239101).

It can be written as a sum of positive squares in 2 ways, for example, as 3268864 + 970225 = 1808^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 4239089 - 2⁸ = 4238833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4239289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 284 + ... + 2925.

It is an arithmetic number, because the mean of its divisors is an integer number (1060905).

Almost surely, 2^4239089 is an apocalyptic number.

It is an amenable number.

4239089 is a deficient number, since it is larger than the sum of its proper divisors (4531).

4239089 is a wasteful number, since it uses less digits than its factorization.

4239089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4530.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 4239089 is about 2058.9048059587. The cubic root of 4239089 is about 161.8418539986.

The spelling of 4239089 in words is "four million, two hundred thirty-nine thousand, eighty-nine".