3417871621 has 2 divisors, whose sum is σ = 3417871622. Its totient is φ = 3417871620.

The previous prime is 3417871619. The next prime is 3417871637. The reversal of 3417871621 is 1261787143.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1925980996 + 1491890625 = 43886^2 + 38625^2 .

It is an emirp because it is prime and its reverse (1261787143) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3417871621 - 2¹ = 3417871619 is a prime.

Together with 3417871619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3417871021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1708935810 + 1708935811.

It is an arithmetic number, because the mean of its divisors is an integer number (1708935811).

Almost surely, 2^3417871621 is an apocalyptic number.

It is an amenable number.

3417871621 is a deficient number, since it is larger than the sum of its proper divisors (1).

3417871621 is an equidigital number, since it uses as much as digits as its factorization.

3417871621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56448, while the sum is 40.

The square root of 3417871621 is about 58462.5659802920. The cubic root of 3417871621 is about 1506.3246463445.

The spelling of 3417871621 in words is "three billion, four hundred seventeen million, eight hundred seventy-one thousand, six hundred twenty-one".