4457709 has 6 divisors (see below), whose sum is σ = 6438926. Its totient is φ = 2971800.

The previous prime is 4457693. The next prime is 4457729. The reversal of 4457709 is 9077544.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3348900 + 1108809 = 1830^2 + 1053^2 .

It is not a de Polignac number, because 4457709 - 2⁴ = 4457693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4457729) 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, 247642 + ... + 247659.

Almost surely, 2^4457709 is an apocalyptic number.

It is an amenable number.

4457709 is a deficient number, since it is larger than the sum of its proper divisors (1981217).

4457709 is a wasteful number, since it uses less digits than its factorization.

4457709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495307 (or 495304 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 4457709 is about 2111.3287285499. The cubic root of 4457709 is about 164.5775418710.

The spelling of 4457709 in words is "four million, four hundred fifty-seven thousand, seven hundred nine".