440057709 has 48 divisors (see below), whose sum is σ = 784527744. Its totient is φ = 231465600.

The previous prime is 440057693. The next prime is 440057713. The reversal of 440057709 is 907750044.

It is a happy number.

It is not a de Polignac number, because 440057709 - 2⁴ = 440057693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440057749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 467179 + ... + 468119.

It is an arithmetic number, because the mean of its divisors is an integer number (16344328).

Almost surely, 2^440057709 is an apocalyptic number.

It is an amenable number.

440057709 is a deficient number, since it is larger than the sum of its proper divisors (344470035).

440057709 is a wasteful number, since it uses less digits than its factorization.

440057709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1538 (or 1535 counting only the distinct ones).

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

The square root of 440057709 is about 20977.5525026157. The cubic root of 440057709 is about 760.6237429083.

The spelling of 440057709 in words is "four hundred forty million, fifty-seven thousand, seven hundred nine".