4390065 has 32 divisors (see below), whose sum is σ = 8064000. Its totient is φ = 2263680.

The previous prime is 4390051. The next prime is 4390069. The reversal of 4390065 is 5600934.

It is a happy number.

It is not a de Polignac number, because 4390065 - 2⁸ = 4389809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4390069) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3661 + ... + 4709.

It is an arithmetic number, because the mean of its divisors is an integer number (252000).

Almost surely, 2^4390065 is an apocalyptic number.

4390065 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4390065 is a deficient number, since it is larger than the sum of its proper divisors (3673935).

4390065 is a wasteful number, since it uses less digits than its factorization.

4390065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094 (or 1088 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 4390065 is about 2095.2481953220. The cubic root of 4390065 is about 163.7408284978.

Adding to 4390065 its reverse (5600934), we get a palindrome (9990999).

The spelling of 4390065 in words is "four million, three hundred ninety thousand, sixty-five".