4409681 has 8 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 4061248.

The previous prime is 4409677. The next prime is 4409687. The reversal of 4409681 is 1869044.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4409681 - 2² = 4409677 is a prime.

It is a super-2 number, since 2×4409681² = 38890573043522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4409687) 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, 1961 + ... + 3558.

It is an arithmetic number, because the mean of its divisors is an integer number (596160).

Almost surely, 2^4409681 is an apocalyptic number.

It is an amenable number.

4409681 is a deficient number, since it is larger than the sum of its proper divisors (359599).

4409681 is a wasteful number, since it uses less digits than its factorization.

4409681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5583.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 4409681 is about 2099.9240462455. The cubic root of 4409681 is about 163.9843456206.

The spelling of 4409681 in words is "four million, four hundred nine thousand, six hundred eighty-one".