5471639849 has 8 divisors (see below), whose sum is σ = 5935548360. Its totient is φ = 5013876096.

The previous prime is 5471639821. The next prime is 5471639857. The reversal of 5471639849 is 9489361745.

It can be written as a sum of positive squares in 4 ways, for example, as 20475625 + 5451164224 = 4525^2 + 73832^2 .

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 5471639849 - 2¹⁶ = 5471574313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5471639794 and 5471639803.

It is not an unprimeable number, because it can be changed into a prime (5471639869) 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 7 ways as a sum of consecutive naturals, for example, 1534334 + ... + 1537895.

It is an arithmetic number, because the mean of its divisors is an integer number (741943545).

Almost surely, 2^5471639849 is an apocalyptic number.

It is an amenable number.

5471639849 is a deficient number, since it is larger than the sum of its proper divisors (463908511).

5471639849 is a wasteful number, since it uses less digits than its factorization.

5471639849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3072379.

The product of its digits is 6531840, while the sum is 56.

The square root of 5471639849 is about 73970.5336536110. The cubic root of 5471639849 is about 1762.1349617664.

The spelling of 5471639849 in words is "five billion, four hundred seventy-one million, six hundred thirty-nine thousand, eight hundred forty-nine".