3861208939 has 8 divisors (see below), whose sum is σ = 4413271520. Its totient is φ = 3309261696.

The previous prime is 3861208933. The next prime is 3861208961. The reversal of 3861208939 is 9398021683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3861208939 - 2³ = 3861208931 is a prime.

It is a super-2 number, since 2×3861208939² = 29817868941227011442, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 3861208892 and 3861208901.

It is not an unprimeable number, because it can be changed into a prime (3861208931) 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 7 ways as a sum of consecutive naturals, for example, 61987 + ... + 107539.

It is an arithmetic number, because the mean of its divisors is an integer number (551658940).

Almost surely, 2^3861208939 is an apocalyptic number.

3861208939 is a deficient number, since it is larger than the sum of its proper divisors (552062581).

3861208939 is a wasteful number, since it uses less digits than its factorization.

3861208939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57669.

The product of its (nonzero) digits is 559872, while the sum is 49.

The square root of 3861208939 is about 62138.6267872086. The cubic root of 3861208939 is about 1568.8247576232.

The spelling of 3861208939 in words is "three billion, eight hundred sixty-one million, two hundred eight thousand, nine hundred thirty-nine".