3865040117 has 4 divisors (see below), whose sum is σ = 4092395436. Its totient is φ = 3637684800.

The previous prime is 3865040107. The next prime is 3865040119. The reversal of 3865040117 is 7110405683.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2138970001 + 1726070116 = 46249^2 + 41546^2 .

It is a cyclic number.

It is not a de Polignac number, because 3865040117 - 2⁸ = 3865039861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3865040119) 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, 113677634 + ... + 113677667.

It is an arithmetic number, because the mean of its divisors is an integer number (1023098859).

Almost surely, 2^3865040117 is an apocalyptic number.

It is an amenable number.

3865040117 is a deficient number, since it is larger than the sum of its proper divisors (227355319).

3865040117 is a wasteful number, since it uses less digits than its factorization.

3865040117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227355318.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 3865040117 is about 62169.4468127230. The cubic root of 3865040117 is about 1569.3434604602.

The spelling of 3865040117 in words is "three billion, eight hundred sixty-five million, forty thousand, one hundred seventeen".