3970171421 has 2 divisors, whose sum is σ = 3970171422. Its totient is φ = 3970171420.

The previous prime is 3970171417. The next prime is 3970171459. The reversal of 3970171421 is 1241710793.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3664970521 + 305200900 = 60539^2 + 17470^2 .

It is a cyclic number.

It is not a de Polignac number, because 3970171421 - 2² = 3970171417 is a prime.

It is a super-2 number, since 2×3970171421² = 31524522224250318482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3970171481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1985085710 + 1985085711.

It is an arithmetic number, because the mean of its divisors is an integer number (1985085711).

Almost surely, 2^3970171421 is an apocalyptic number.

It is an amenable number.

3970171421 is a deficient number, since it is larger than the sum of its proper divisors (1).

3970171421 is an equidigital number, since it uses as much as digits as its factorization.

3970171421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 3970171421 is about 63009.2963061801. The cubic root of 3970171421 is about 1583.4453764578.

The spelling of 3970171421 in words is "three billion, nine hundred seventy million, one hundred seventy-one thousand, four hundred twenty-one".