3946512709 has 2 divisors, whose sum is σ = 3946512710. Its totient is φ = 3946512708.

The previous prime is 3946512677. The next prime is 3946512727. The reversal of 3946512709 is 9072156493.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3326751684 + 619761025 = 57678^2 + 24895^2 .

It is a cyclic number.

It is not a de Polignac number, because 3946512709 - 2⁵ = 3946512677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3946512749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973256354 + 1973256355.

It is an arithmetic number, because the mean of its divisors is an integer number (1973256355).

Almost surely, 2^3946512709 is an apocalyptic number.

It is an amenable number.

3946512709 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946512709 is an equidigital number, since it uses as much as digits as its factorization.

3946512709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 3946512709 is about 62821.2759262338. The cubic root of 3946512709 is about 1580.2937963782.

The spelling of 3946512709 in words is "three billion, nine hundred forty-six million, five hundred twelve thousand, seven hundred nine".