440640711 has 12 divisors (see below), whose sum is σ = 727406992. Its totient is φ = 251794656.

The previous prime is 440640667. The next prime is 440640719. The reversal of 440640711 is 117046044.

440640711 is a `hidden beast` number, since 4 + 4 + 0 + 640 + 7 + 11 = 666.

It is not a de Polignac number, because 440640711 - 2⁷ = 440640583 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (440640719) 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, 3497086 + ... + 3497211.

Almost surely, 2^440640711 is an apocalyptic number.

440640711 is a deficient number, since it is larger than the sum of its proper divisors (286766281).

440640711 is a wasteful number, since it uses less digits than its factorization.

440640711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6994310 (or 6994307 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 440640711 is about 20991.4437569215. The cubic root of 440640711 is about 760.9594939309.

Adding to 440640711 its reverse (117046044), we get a palindrome (557686755).

The spelling of 440640711 in words is "four hundred forty million, six hundred forty thousand, seven hundred eleven".