4387889 has 8 divisors (see below), whose sum is σ = 4868640. Its totient is φ = 3920800.

The previous prime is 4387847. The next prime is 4387891. The reversal of 4387889 is 9887834.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4387889 - 2⁸ = 4387633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4387829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2732 + ... + 4029.

It is an arithmetic number, because the mean of its divisors is an integer number (608580).

Almost surely, 2^4387889 is an apocalyptic number.

It is an amenable number.

4387889 is a deficient number, since it is larger than the sum of its proper divisors (480751).

4387889 is a wasteful number, since it uses less digits than its factorization.

4387889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6831.

The product of its digits is 387072, while the sum is 47.

The square root of 4387889 is about 2094.7288607359. The cubic root of 4387889 is about 163.7137705137.

Subtracting 4387889 from its reverse (9887834), we obtain a palindrome (5499945).

The spelling of 4387889 in words is "four million, three hundred eighty-seven thousand, eight hundred eighty-nine".