8872139 has 2 divisors, whose sum is σ = 8872140. Its totient is φ = 8872138.

The previous prime is 8872133. The next prime is 8872153. The reversal of 8872139 is 9312788.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8872139 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (8872133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4436069 + 4436070.

It is an arithmetic number, because the mean of its divisors is an integer number (4436070).

Almost surely, 2^8872139 is an apocalyptic number.

8872139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8872139 is an equidigital number, since it uses as much as digits as its factorization.

8872139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 8872139 is about 2978.6136036754. The cubic root of 8872139 is about 207.0186374189.

It can be divided in two parts, 88 and 72139, that added together give a palindrome (72227).

The spelling of 8872139 in words is "eight million, eight hundred seventy-two thousand, one hundred thirty-nine".