4387689 has 20 divisors (see below), whose sum is σ = 6901840. Its totient is φ = 2770200.

The previous prime is 4387681. The next prime is 4387693. The reversal of 4387689 is 9867834.

It is a happy number.

4387689 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 4387689 - 2³ = 4387681 is a prime.

It is a Duffinian number.

4387689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4387681) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 114 + ... + 2964.

It is an arithmetic number, because the mean of its divisors is an integer number (345092).

Almost surely, 2^4387689 is an apocalyptic number.

It is an amenable number.

4387689 is a deficient number, since it is larger than the sum of its proper divisors (2514151).

4387689 is a wasteful number, since it uses less digits than its factorization.

4387689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2882 (or 2873 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 4387689 is about 2094.6811213166. The cubic root of 4387689 is about 163.7112831178.

The spelling of 4387689 in words is "four million, three hundred eighty-seven thousand, six hundred eighty-nine".