4409649 has 6 divisors (see below), whose sum is σ = 6369506. Its totient is φ = 2939760.

The previous prime is 4409633. The next prime is 4409651. The reversal of 4409649 is 9469044.

4409649 is a `hidden beast` number, since 4 + 4 + 0 + 9 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4223025 + 186624 = 2055^2 + 432^2 .

It is not a de Polignac number, because 4409649 - 2⁴ = 4409633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4409609) 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, 244972 + ... + 244989.

Almost surely, 2^4409649 is an apocalyptic number.

It is an amenable number.

4409649 is a deficient number, since it is larger than the sum of its proper divisors (1959857).

4409649 is a wasteful number, since it uses less digits than its factorization.

4409649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489967 (or 489964 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 4409649 is about 2099.9164269085. The cubic root of 4409649 is about 163.9839489546.

The spelling of 4409649 in words is "four million, four hundred nine thousand, six hundred forty-nine".