3906217957 has 2 divisors, whose sum is σ = 3906217958. Its totient is φ = 3906217956.

The previous prime is 3906217907. The next prime is 3906217967. The reversal of 3906217957 is 7597126093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3410443201 + 495774756 = 58399^2 + 22266^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3906217957 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3906217957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3906217907) 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, 1953108978 + 1953108979.

It is an arithmetic number, because the mean of its divisors is an integer number (1953108979).

Almost surely, 2^3906217957 is an apocalyptic number.

It is an amenable number.

3906217957 is a deficient number, since it is larger than the sum of its proper divisors (1).

3906217957 is an equidigital number, since it uses as much as digits as its factorization.

3906217957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 49.

The square root of 3906217957 is about 62499.7436554743. The cubic root of 3906217957 is about 1574.8970060475.

The spelling of 3906217957 in words is "three billion, nine hundred six million, two hundred seventeen thousand, nine hundred fifty-seven".