4000505689 has 4 divisors (see below), whose sum is σ = 4211058640. Its totient is φ = 3789952740.

The previous prime is 4000505687. The next prime is 4000505819. The reversal of 4000505689 is 9865050004.

4000505689 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4000505689 - 2¹ = 4000505687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4000505687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105276447 + ... + 105276484.

It is an arithmetic number, because the mean of its divisors is an integer number (1052764660).

Almost surely, 2^4000505689 is an apocalyptic number.

It is an amenable number.

4000505689 is a deficient number, since it is larger than the sum of its proper divisors (210552951).

4000505689 is a wasteful number, since it uses less digits than its factorization.

4000505689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210552950.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 4000505689 is about 63249.5508995914. The cubic root of 4000505689 is about 1587.4679434203.

The spelling of 4000505689 in words is "four billion, five hundred five thousand, six hundred eighty-nine".