3840652729 has 9 divisors (see below), whose sum is σ = 3979517997. Its totient is φ = 3706481184.

The previous prime is 3840652727. The next prime is 3840652763. The reversal of 3840652729 is 9272560483.

The square root of 3840652729 is 61973.

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

3840652729 is digitally balanced in base 3, 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 1037162025 + 2803490704 = 32205^2 + 52948^2 .

It is not a de Polignac number, because 3840652729 - 2¹ = 3840652727 is a prime.

It is a super-2 number, since 2×3840652729² = 29501226769550294882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3840652721) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1796149 + ... + 1798285.

Almost surely, 2^3840652729 is an apocalyptic number.

3840652729 is the 61973-rd square number.

3840652729 is the 30987-th centered octagonal number.

It is an amenable number.

3840652729 is a deficient number, since it is larger than the sum of its proper divisors (138865268).

3840652729 is an frugal number, since it uses more digits than its factorization.

3840652729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332 (or 2166 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 46.

The cubic root of 3840652729 is about 1566.0357787893.

The spelling of 3840652729 in words is "three billion, eight hundred forty million, six hundred fifty-two thousand, seven hundred twenty-nine".