4023389 has 4 divisors (see below), whose sum is σ = 4099356. Its totient is φ = 3947424.

The previous prime is 4023359. The next prime is 4023401. The reversal of 4023389 is 9833204.

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 3003289 + 1020100 = 1733^2 + 1010^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4023389 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4023319) 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, 37904 + ... + 38009.

It is an arithmetic number, because the mean of its divisors is an integer number (1024839).

Almost surely, 2^4023389 is an apocalyptic number.

It is an amenable number.

4023389 is a deficient number, since it is larger than the sum of its proper divisors (75967).

4023389 is an equidigital number, since it uses as much as digits as its factorization.

4023389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75966.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 4023389 is about 2005.8387273158. The cubic root of 4023389 is about 159.0489017997.

The spelling of 4023389 in words is "four million, twenty-three thousand, three hundred eighty-nine".