440650869 has 16 divisors (see below), whose sum is σ = 618905280. Its totient is φ = 278104320.

The previous prime is 440650843. The next prime is 440650877. The reversal of 440650869 is 968056044.

It is not a de Polignac number, because 440650869 - 2⁷ = 440650741 is a prime.

It is a super-2 number, since 2×440650869² = 388346376700910322, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 440650869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440650879) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 139629 + ... + 142749.

It is an arithmetic number, because the mean of its divisors is an integer number (38681580).

Almost surely, 2^440650869 is an apocalyptic number.

It is an amenable number.

440650869 is a deficient number, since it is larger than the sum of its proper divisors (178254411).

440650869 is a wasteful number, since it uses less digits than its factorization.

440650869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5620.

The product of its (nonzero) digits is 207360, while the sum is 42.

The square root of 440650869 is about 20991.6857112524. The cubic root of 440650869 is about 760.9653413004.

The spelling of 440650869 in words is "four hundred forty million, six hundred fifty thousand, eight hundred sixty-nine".