4471387813 has 4 divisors (see below), whose sum is σ = 4484054988. Its totient is φ = 4458720640.

The previous prime is 4471387807. The next prime is 4471387829. The reversal of 4471387813 is 3187831744.

4471387813 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 728028324 + 3743359489 = 26982^2 + 61183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4471387813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4471387853) 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, 6333058 + ... + 6333763.

It is an arithmetic number, because the mean of its divisors is an integer number (1121013747).

Almost surely, 2^4471387813 is an apocalyptic number.

It is an amenable number.

4471387813 is a deficient number, since it is larger than the sum of its proper divisors (12667175).

4471387813 is a wasteful number, since it uses less digits than its factorization.

4471387813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12667174.

The product of its digits is 451584, while the sum is 46.

The square root of 4471387813 is about 66868.4365975458. The cubic root of 4471387813 is about 1647.4570946954.

The spelling of 4471387813 in words is "four billion, four hundred seventy-one million, three hundred eighty-seven thousand, eight hundred thirteen".