4538139 has 4 divisors (see below), whose sum is σ = 6050856. Its totient is φ = 3025424.

The previous prime is 4538137. The next prime is 4538143. The reversal of 4538139 is 9318354.

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

It is a cyclic number.

It is not a de Polignac number, because 4538139 - 2¹ = 4538137 is a prime.

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (4538137) 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, 756354 + ... + 756359.

It is an arithmetic number, because the mean of its divisors is an integer number (1512714).

Almost surely, 2^4538139 is an apocalyptic number.

4538139 is a deficient number, since it is larger than the sum of its proper divisors (1512717).

4538139 is a wasteful number, since it uses less digits than its factorization.

4538139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1512716.

The product of its digits is 12960, while the sum is 33.

The square root of 4538139 is about 2130.2908252161. The cubic root of 4538139 is about 165.5614665063.

The spelling of 4538139 in words is "four million, five hundred thirty-eight thousand, one hundred thirty-nine".