4457649 has 16 divisors (see below), whose sum is σ = 6977408. Its totient is φ = 2477952.

The previous prime is 4457639. The next prime is 4457657. The reversal of 4457649 is 9467544.

It is a happy number.

It is not a de Polignac number, because 4457649 - 2¹³ = 4449457 is a prime.

It is a d-powerful number, because it can be written as 4⁵ + 4⁹ + 5³ + 7 + 6² + 4¹¹ + 9 .

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4457639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2092 + ... + 3645.

It is an arithmetic number, because the mean of its divisors is an integer number (436088).

Almost surely, 2^4457649 is an apocalyptic number.

It is an amenable number.

4457649 is a deficient number, since it is larger than the sum of its proper divisors (2519759).

4457649 is a wasteful number, since it uses less digits than its factorization.

4457649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5784.

The product of its digits is 120960, while the sum is 39.

The square root of 4457649 is about 2111.3145194404. The cubic root of 4457649 is about 164.5768034725.

The spelling of 4457649 in words is "four million, four hundred fifty-seven thousand, six hundred forty-nine".