440865513 has 12 divisors (see below), whose sum is σ = 694697328. Its totient is φ = 267191160.

The previous prime is 440865487. The next prime is 440865547. The reversal of 440865513 is 315568044.

It is a happy number.

It is not a de Polignac number, because 440865513 - 2⁹ = 440865001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (440865013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2226495 + ... + 2226692.

It is an arithmetic number, because the mean of its divisors is an integer number (57891444).

Almost surely, 2^440865513 is an apocalyptic number.

It is an amenable number.

440865513 is a deficient number, since it is larger than the sum of its proper divisors (253831815).

440865513 is a wasteful number, since it uses less digits than its factorization.

440865513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453204 (or 4453201 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 440865513 is about 20996.7976844089. The cubic root of 440865513 is about 761.0888783548.

The spelling of 440865513 in words is "four hundred forty million, eight hundred sixty-five thousand, five hundred thirteen".