4006688709 has 16 divisors (see below), whose sum is σ = 5358942720. Its totient is φ = 2662795200.

The previous prime is 4006688687. The next prime is 4006688779. The reversal of 4006688709 is 9078866004.

It is not a de Polignac number, because 4006688709 - 2⁸ = 4006688453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4006688779) 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 15 ways as a sum of consecutive naturals, for example, 2052684 + ... + 2054634.

It is an arithmetic number, because the mean of its divisors is an integer number (334933920).

Almost surely, 2^4006688709 is an apocalyptic number.

It is an amenable number.

4006688709 is a deficient number, since it is larger than the sum of its proper divisors (1352254011).

4006688709 is a wasteful number, since it uses less digits than its factorization.

4006688709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740.

The product of its (nonzero) digits is 580608, while the sum is 48.

The square root of 4006688709 is about 63298.4100037276. The cubic root of 4006688709 is about 1588.2853645507.

The spelling of 4006688709 in words is "four billion, six million, six hundred eighty-eight thousand, seven hundred nine".