3247387139 has 2 divisors, whose sum is σ = 3247387140. Its totient is φ = 3247387138.

The previous prime is 3247387123. The next prime is 3247387153. The reversal of 3247387139 is 9317837423.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3247387139 - 2⁴ = 3247387123 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3247387093 and 3247387102.

It is not a weakly prime, because it can be changed into another prime (3247387159) 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 as a sum of consecutive naturals, namely, 1623693569 + 1623693570.

It is an arithmetic number, because the mean of its divisors is an integer number (1623693570).

Almost surely, 2^3247387139 is an apocalyptic number.

3247387139 is a deficient number, since it is larger than the sum of its proper divisors (1).

3247387139 is an equidigital number, since it uses as much as digits as its factorization.

3247387139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 762048, while the sum is 47.

The square root of 3247387139 is about 56985.8503402380. The cubic root of 3247387139 is about 1480.8509744224.

The spelling of 3247387139 in words is "three billion, two hundred forty-seven million, three hundred eighty-seven thousand, one hundred thirty-nine".