3946071452909 has 2 divisors, whose sum is σ = 3946071452910. Its totient is φ = 3946071452908.

The previous prime is 3946071452891. The next prime is 3946071452929. The reversal of 3946071452909 is 9092541706493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2970366075625 + 975705377284 = 1723475^2 + 987778^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3946071452909 is a prime.

It is a super-2 number, since 2×3946071452909² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3946071452929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1973035726454 + 1973035726455.

It is an arithmetic number, because the mean of its divisors is an integer number (1973035726455).

Almost surely, 2^{3946071452909} is an apocalyptic number.

It is an amenable number.

3946071452909 is a deficient number, since it is larger than the sum of its proper divisors (1).

3946071452909 is an equidigital number, since it uses as much as digits as its factorization.

3946071452909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 59.

The spelling of 3946071452909 in words is "three trillion, nine hundred forty-six billion, seventy-one million, four hundred fifty-two thousand, nine hundred nine".