3859644956 has 12 divisors (see below), whose sum is σ = 6972262080. Its totient is φ = 1867570080.

The previous prime is 3859644953. The next prime is 3859644959. The reversal of 3859644956 is 6594469583.

It is an interprime number because it is at equal distance from previous prime (3859644953) and next prime (3859644959).

It is a junction number, because it is equal to n+sod(n) for n = 3859644895 and 3859644904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3859644953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15562961 + ... + 15563208.

It is an arithmetic number, because the mean of its divisors is an integer number (581021840).

Almost surely, 2^3859644956 is an apocalyptic number.

It is an amenable number.

3859644956 is a deficient number, since it is larger than the sum of its proper divisors (3112617124).

3859644956 is a wasteful number, since it uses less digits than its factorization.

3859644956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31126204 (or 31126202 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 59.

The square root of 3859644956 is about 62126.0408846403. The cubic root of 3859644956 is about 1568.6129114853.

The spelling of 3859644956 in words is "three billion, eight hundred fifty-nine million, six hundred forty-four thousand, nine hundred fifty-six".