4000412665 has 16 divisors (see below), whose sum is σ = 5117126400. Its totient is φ = 2993507712.

The previous prime is 4000412659. The next prime is 4000412687. The reversal of 4000412665 is 5662140004.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4000412665 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 259012 + ... + 274021.

It is an arithmetic number, because the mean of its divisors is an integer number (319820400).

Almost surely, 2^4000412665 is an apocalyptic number.

It is an amenable number.

4000412665 is a deficient number, since it is larger than the sum of its proper divisors (1116713735).

4000412665 is a wasteful number, since it uses less digits than its factorization.

4000412665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533136.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 4000412665 is about 63248.8155225060. The cubic root of 4000412665 is about 1587.4556388290.

Adding to 4000412665 its reverse (5662140004), we get a palindrome (9662552669).

The spelling of 4000412665 in words is "four billion, four hundred twelve thousand, six hundred sixty-five".