4440661 has 6 divisors (see below), whose sum is σ = 4687062. Its totient is φ = 4206600.

The previous prime is 4440659. The next prime is 4440673. The reversal of 4440661 is 1660444.

It can be written as a sum of positive squares in only one way, i.e., 3538161 + 902500 = 1881^2 + 950^2 .

It is not a de Polignac number, because 4440661 - 2¹ = 4440659 is a prime.

It is a Duffinian number.

4440661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4440641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5790 + ... + 6511.

It is an arithmetic number, because the mean of its divisors is an integer number (781177).

Almost surely, 2^4440661 is an apocalyptic number.

It is an amenable number.

4440661 is a deficient number, since it is larger than the sum of its proper divisors (246401).

4440661 is a wasteful number, since it uses less digits than its factorization.

4440661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12339 (or 12320 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 4440661 is about 2107.2875930921. The cubic root of 4440661 is about 164.3674711621.

The spelling of 4440661 in words is "four million, four hundred forty thousand, six hundred sixty-one".