4389399 has 36 divisors (see below), whose sum is σ = 7687056. Its totient is φ = 2363904.

The previous prime is 4389379. The next prime is 4389401. The reversal of 4389399 is 9939834.

4389399 = T₁₁₄ + T₁₁₅ + ... + T₃₀₂.

4389399 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4389399 - 2⁵ = 4389367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4389379) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 22647 + ... + 22839.

Almost surely, 2^4389399 is an apocalyptic number.

4389399 is a deficient number, since it is larger than the sum of its proper divisors (3297657).

4389399 is a wasteful number, since it uses less digits than its factorization.

4389399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244 (or 222 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 4389399 is about 2095.0892582418. The cubic root of 4389399 is about 163.7325479138.

It can be divided in two parts, 4 and 389399, that added together give a triangular number (389403 = T₈₈₂).

The spelling of 4389399 in words is "four million, three hundred eighty-nine thousand, three hundred ninety-nine".