39970416121 has 2 divisors, whose sum is σ = 39970416122. Its totient is φ = 39970416120.

The previous prime is 39970416053. The next prime is 39970416149. The reversal of 39970416121 is 12161407993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39456260496 + 514155625 = 198636^2 + 22675^2 .

It is a cyclic number.

It is not a de Polignac number, because 39970416121 - 2¹⁷ = 39970285049 is a prime.

It is not a weakly prime, because it can be changed into another prime (39970416191) 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, 19985208060 + 19985208061.

It is an arithmetic number, because the mean of its divisors is an integer number (19985208061).

Almost surely, 2^39970416121 is an apocalyptic number.

It is an amenable number.

39970416121 is a deficient number, since it is larger than the sum of its proper divisors (1).

39970416121 is an equidigital number, since it uses as much as digits as its factorization.

39970416121 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 39970416121 in words is "thirty-nine billion, nine hundred seventy million, four hundred sixteen thousand, one hundred twenty-one".