3856117 has 4 divisors (see below), whose sum is σ = 3870316. Its totient is φ = 3841920.

The previous prime is 3856109. The next prime is 3856123. The reversal of 3856117 is 7116583.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7116583 = 19 ⋅374557.

It can be written as a sum of positive squares in 2 ways, for example, as 1425636 + 2430481 = 1194^2 + 1559^2 .

It is a cyclic number.

It is not a de Polignac number, because 3856117 - 2³ = 3856109 is a prime.

It is a Duffinian number.

3856117 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856147) 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, 6684 + ... + 7237.

It is an arithmetic number, because the mean of its divisors is an integer number (967579).

Almost surely, 2^3856117 is an apocalyptic number.

It is an amenable number.

3856117 is a deficient number, since it is larger than the sum of its proper divisors (14199).

3856117 is a wasteful number, since it uses less digits than its factorization.

3856117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14198.

The product of its digits is 5040, while the sum is 31.

The square root of 3856117 is about 1963.6998243112. The cubic root of 3856117 is about 156.8134829141.

The spelling of 3856117 in words is "three million, eight hundred fifty-six thousand, one hundred seventeen".