5665389 has 4 divisors (see below), whose sum is σ = 7553856. Its totient is φ = 3776924.

The previous prime is 5665381. The next prime is 5665399. The reversal of 5665389 is 9835665.

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 not a de Polignac number, because 5665389 - 2³ = 5665381 is a prime.

It is a D-number.

It is a self number, because there is not a number n which added to its sum of digits gives 5665389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5665381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 944229 + ... + 944234.

It is an arithmetic number, because the mean of its divisors is an integer number (1888464).

Almost surely, 2^5665389 is an apocalyptic number.

It is an amenable number.

5665389 is a deficient number, since it is larger than the sum of its proper divisors (1888467).

5665389 is a wasteful number, since it uses less digits than its factorization.

5665389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1888466.

The product of its digits is 194400, while the sum is 42.

The square root of 5665389 is about 2380.2077640408. The cubic root of 5665389 is about 178.2693078651.

The spelling of 5665389 in words is "five million, six hundred sixty-five thousand, three hundred eighty-nine".