4390066 has 16 divisors (see below), whose sum is σ = 6746688. Its totient is φ = 2142000.

The previous prime is 4390051. The next prime is 4390069. The reversal of 4390066 is 6600934.

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 7 ways as a sum of consecutive naturals, for example, 20701 + ... + 20911.

It is an arithmetic number, because the mean of its divisors is an integer number (421668).

Almost surely, 2^4390066 is an apocalyptic number.

4390066 is a deficient number, since it is larger than the sum of its proper divisors (2356622).

4390066 is a wasteful number, since it uses less digits than its factorization.

4390066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 417.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 4390066 is about 2095.2484339572. The cubic root of 4390066 is about 163.7408409305.

It can be divided in two parts, 43 and 90066, that added together give a palindrome (90109).

The spelling of 4390066 in words is "four million, three hundred ninety thousand, sixty-six".