3865213329 has 32 divisors (see below), whose sum is σ = 5303500800. Its totient is φ = 2503275840.

The previous prime is 3865213243. The next prime is 3865213337. The reversal of 3865213329 is 9233125683.

3865213329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3865213329 - 2⁷ = 3865213201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3865215329) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4662087 + ... + 4662915.

It is an arithmetic number, because the mean of its divisors is an integer number (165734400).

Almost surely, 2^3865213329 is an apocalyptic number.

It is an amenable number.

3865213329 is a deficient number, since it is larger than the sum of its proper divisors (1438287471).

3865213329 is a wasteful number, since it uses less digits than its factorization.

3865213329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1205.

The product of its digits is 233280, while the sum is 42.

The square root of 3865213329 is about 62170.8398608222. The cubic root of 3865213329 is about 1569.3669035165.

The spelling of 3865213329 in words is "three billion, eight hundred sixty-five million, two hundred thirteen thousand, three hundred twenty-nine".