4399889 has 16 divisors (see below), whose sum is σ = 5144832. Its totient is φ = 3725568.

The previous prime is 4399883. The next prime is 4399903. The reversal of 4399889 is 9889934.

4399889 = T₄₀ + T₄₁ + ... + T₂₉₇.

It is a cyclic number.

It is not a de Polignac number, because 4399889 - 2⁴ = 4399873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4399883) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9272 + ... + 9734.

It is an arithmetic number, because the mean of its divisors is an integer number (321552).

Almost surely, 2^4399889 is an apocalyptic number.

It is an amenable number.

4399889 is a deficient number, since it is larger than the sum of its proper divisors (744943).

4399889 is a wasteful number, since it uses less digits than its factorization.

4399889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536.

The product of its digits is 559872, while the sum is 50.

The square root of 4399889 is about 2097.5912375866. The cubic root of 4399889 is about 163.8628761591.

The spelling of 4399889 in words is "four million, three hundred ninety-nine thousand, eight hundred eighty-nine".