3887589059809 has 81 divisors (see below), whose sum is σ = 5014209143961. Its totient is φ = 3003919813440.

The previous prime is 3887589059777. The next prime is 3887589059839. The reversal of 3887589059809 is 9089509857883.

The square root of 3887589059809 is 1971697.

It is a perfect power (a square), and thus also a powerful number.

3887589059809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1146816101025 + 2740772958784 = 1070895^2 + 1655528^2 .

It is not a de Polignac number, because 3887589059809 - 2⁵ = 3887589059777 is a prime.

It is a super-2 number, since 2×3887589059809² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3887589059839) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 8432947839 + ... + 8432948299.

Almost surely, 2^{3887589059809} is an apocalyptic number.

3887589059809 is the 1971697-th square number.

3887589059809 is the 985849-th centered octagonal number.

It is an amenable number.

3887589059809 is a deficient number, since it is larger than the sum of its proper divisors (1126620084152).

3887589059809 is an frugal number, since it uses more digits than its factorization.

3887589059809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056 (or 528 counting only the distinct ones).

The product of its (nonzero) digits is 1567641600, while the sum is 79.

The spelling of 3887589059809 in words is "three trillion, eight hundred eighty-seven billion, five hundred eighty-nine million, fifty-nine thousand, eight hundred nine".