5139818 has 8 divisors (see below), whose sum is σ = 7918212. Its totient is φ = 2500416.

The previous prime is 5139811. The next prime is 5139821. The reversal of 5139818 is 8189315.

It can be written as a sum of positive squares in 2 ways, for example, as 5139289 + 529 = 2267^2 + 23^2 .

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

It is an Ulam number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5139811) 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 3 ways as a sum of consecutive naturals, for example, 34655 + ... + 34802.

Almost surely, 2^5139818 is an apocalyptic number.

5139818 is a deficient number, since it is larger than the sum of its proper divisors (2778394).

5139818 is a wasteful number, since it uses less digits than its factorization.

5139818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69496.

The product of its digits is 8640, while the sum is 35.

The square root of 5139818 is about 2267.1166710163. The cubic root of 5139818 is about 172.5768669538.

The spelling of 5139818 in words is "five million, one hundred thirty-nine thousand, eight hundred eighteen".