6522399139 has 2 divisors, whose sum is σ = 6522399140. Its totient is φ = 6522399138.

The previous prime is 6522399131. The next prime is 6522399151. The reversal of 6522399139 is 9319932256.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6522399139 - 2³ = 6522399131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6522399092 and 6522399101.

It is not a weakly prime, because it can be changed into another prime (6522399131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3261199569 + 3261199570.

It is an arithmetic number, because the mean of its divisors is an integer number (3261199570).

Almost surely, 2^6522399139 is an apocalyptic number.

6522399139 is a deficient number, since it is larger than the sum of its proper divisors (1).

6522399139 is an equidigital number, since it uses as much as digits as its factorization.

6522399139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 787320, while the sum is 49.

The square root of 6522399139 is about 80761.3715770108. The cubic root of 6522399139 is about 1868.3968395558.

The spelling of 6522399139 in words is "six billion, five hundred twenty-two million, three hundred ninety-nine thousand, one hundred thirty-nine".