3865239017 has 16 divisors (see below), whose sum is σ = 4121767440. Its totient is φ = 3612045312.

The previous prime is 3865238963. The next prime is 3865239023. The reversal of 3865239017 is 7109325683.

It can be written as a sum of positive squares in 8 ways, for example, as 23222761 + 3842016256 = 4819^2 + 61984^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865239017 - 2¹⁰ = 3865237993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3865239047) 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, 1684523 + ... + 1686815.

It is an arithmetic number, because the mean of its divisors is an integer number (257610465).

Almost surely, 2^3865239017 is an apocalyptic number.

It is an amenable number.

3865239017 is a deficient number, since it is larger than the sum of its proper divisors (256528423).

3865239017 is a wasteful number, since it uses less digits than its factorization.

3865239017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2972.

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 3865239017 is about 62171.0464525087. The cubic root of 3865239017 is about 1569.3703801515.

The spelling of 3865239017 in words is "three billion, eight hundred sixty-five million, two hundred thirty-nine thousand, seventeen".