5120838209 has 8 divisors (see below), whose sum is σ = 5422908168. Its totient is φ = 4818862080.

The previous prime is 5120838179. The next prime is 5120838287. The reversal of 5120838209 is 9028380215.

It can be written as a sum of positive squares in 4 ways, for example, as 935136400 + 4185701809 = 30580^2 + 64697^2 .

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-5120838209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5120838809) 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, 110969 + ... + 150185.

It is an arithmetic number, because the mean of its divisors is an integer number (677863521).

Almost surely, 2^5120838209 is an apocalyptic number.

It is an amenable number.

5120838209 is a deficient number, since it is larger than the sum of its proper divisors (302069959).

5120838209 is a wasteful number, since it uses less digits than its factorization.

5120838209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46915.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 5120838209 is about 71560.0322037379. The cubic root of 5120838209 is about 1723.6418024426.

The spelling of 5120838209 in words is "five billion, one hundred twenty million, eight hundred thirty-eight thousand, two hundred nine".