4365989 has 4 divisors (see below), whose sum is σ = 4390560. Its totient is φ = 4341420.

The previous prime is 4365961. The next prime is 4365997. The reversal of 4365989 is 9895634.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4365989 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 (4365089) 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 in 3 ways as a sum of consecutive naturals, for example, 12017 + ... + 12374.

It is an arithmetic number, because the mean of its divisors is an integer number (1097640).

Almost surely, 2^4365989 is an apocalyptic number.

It is an amenable number.

4365989 is a deficient number, since it is larger than the sum of its proper divisors (24571).

4365989 is a wasteful number, since it uses less digits than its factorization.

4365989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24570.

The product of its digits is 233280, while the sum is 44.

The square root of 4365989 is about 2089.4949150453. The cubic root of 4365989 is about 163.4409504114.

The spelling of 4365989 in words is "four million, three hundred sixty-five thousand, nine hundred eighty-nine".