4002389 has 2 divisors, whose sum is σ = 4002390. Its totient is φ = 4002388.

The previous prime is 4002353. The next prime is 4002403. The reversal of 4002389 is 9832004.

4002389 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., 2427364 + 1575025 = 1558^2 + 1255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4002389 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4002329) 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 as a sum of consecutive naturals, namely, 2001194 + 2001195.

It is an arithmetic number, because the mean of its divisors is an integer number (2001195).

Almost surely, 2^4002389 is an apocalyptic number.

It is an amenable number.

4002389 is a deficient number, since it is larger than the sum of its proper divisors (1).

4002389 is an equidigital number, since it uses as much as digits as its factorization.

4002389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 4002389 is about 2000.5971608497. The cubic root of 4002389 is about 158.7717014167.

The spelling of 4002389 in words is "four million, two thousand, three hundred eighty-nine".