39970475971 has 2 divisors, whose sum is σ = 39970475972. Its totient is φ = 39970475970.

The previous prime is 39970475957. The next prime is 39970476017. The reversal of 39970475971 is 17957407993.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-39970475971 is a prime.

It is not a weakly prime, because it can be changed into another prime (39970475911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19985237985 + 19985237986.

It is an arithmetic number, because the mean of its divisors is an integer number (19985237986).

Almost surely, 2^39970475971 is an apocalyptic number.

39970475971 is a deficient number, since it is larger than the sum of its proper divisors (1).

39970475971 is an equidigital number, since it uses as much as digits as its factorization.

39970475971 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15002820, while the sum is 61.

The spelling of 39970475971 in words is "thirty-nine billion, nine hundred seventy million, four hundred seventy-five thousand, nine hundred seventy-one".