4406561 has 4 divisors (see below), whose sum is σ = 4429824. Its totient is φ = 4383300.

The previous prime is 4406551. The next prime is 4406573. The reversal of 4406561 is 1656044.

It is a happy number.

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-4406561 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4406561.

It is not an unprimeable number, because it can be changed into a prime (4406531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11345 + ... + 11726.

It is an arithmetic number, because the mean of its divisors is an integer number (1107456).

Almost surely, 2^4406561 is an apocalyptic number.

It is an amenable number.

4406561 is a deficient number, since it is larger than the sum of its proper divisors (23263).

4406561 is a wasteful number, since it uses less digits than its factorization.

4406561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23262.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 4406561 is about 2099.1810307832. The cubic root of 4406561 is about 163.9456616530.

The spelling of 4406561 in words is "four million, four hundred six thousand, five hundred sixty-one".