8399515139 has 2 divisors, whose sum is σ = 8399515140. Its totient is φ = 8399515138.

The previous prime is 8399515127. The next prime is 8399515171. The reversal of 8399515139 is 9315159938.

8399515139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8399515139 is a prime.

It is not a weakly prime, because it can be changed into another prime (8399515339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4199757569 + 4199757570.

It is an arithmetic number, because the mean of its divisors is an integer number (4199757570).

Almost surely, 2^8399515139 is an apocalyptic number.

8399515139 is a deficient number, since it is larger than the sum of its proper divisors (1).

8399515139 is an equidigital number, since it uses as much as digits as its factorization.

8399515139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1312200, while the sum is 53.

The square root of 8399515139 is about 91648.8687273335. The cubic root of 8399515139 is about 2032.7536008967.

The spelling of 8399515139 in words is "eight billion, three hundred ninety-nine million, five hundred fifteen thousand, one hundred thirty-nine".