5139894173 has 4 divisors (see below), whose sum is σ = 5140572060. Its totient is φ = 5139216288.

The previous prime is 5139894167. The next prime is 5139894181. The reversal of 5139894173 is 3714989315.

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 2448567289 + 2691326884 = 49483^2 + 51878^2 .

It is a cyclic number.

It is not a de Polignac number, because 5139894173 - 2¹⁴ = 5139877789 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 (5139894113) 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, 327440 + ... + 342777.

It is an arithmetic number, because the mean of its divisors is an integer number (1285143015).

Almost surely, 2^5139894173 is an apocalyptic number.

It is an amenable number.

5139894173 is a deficient number, since it is larger than the sum of its proper divisors (677887).

5139894173 is an equidigital number, since it uses as much as digits as its factorization.

5139894173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 677886.

The product of its digits is 816480, while the sum is 50.

The square root of 5139894173 is about 71693.0552633935. The cubic root of 5139894173 is about 1725.7771948936. Note that the first 3 decimals are identical.

The spelling of 5139894173 in words is "five billion, one hundred thirty-nine million, eight hundred ninety-four thousand, one hundred seventy-three".