3879643049 has 8 divisors (see below), whose sum is σ = 4111995528. Its totient is φ = 3647750400.

The previous prime is 3879642971. The next prime is 3879643067. The reversal of 3879643049 is 9403469783.

It can be written as a sum of positive squares in 4 ways, for example, as 2741255449 + 1138387600 = 52357^2 + 33740^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3879643049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3879643069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97502 + ... + 131399.

It is an arithmetic number, because the mean of its divisors is an integer number (513999441).

Almost surely, 2^3879643049 is an apocalyptic number.

It is an amenable number.

3879643049 is a deficient number, since it is larger than the sum of its proper divisors (232352479).

3879643049 is a wasteful number, since it uses less digits than its factorization.

3879643049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229915.

The product of its (nonzero) digits is 3919104, while the sum is 53.

The square root of 3879643049 is about 62286.7806922143. The cubic root of 3879643049 is about 1571.3174127617.

The spelling of 3879643049 in words is "three billion, eight hundred seventy-nine million, six hundred forty-three thousand, forty-nine".