2171352839 has 2 divisors, whose sum is σ = 2171352840. Its totient is φ = 2171352838.

The previous prime is 2171352797. The next prime is 2171352853. The reversal of 2171352839 is 9382531712.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2171352839 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2171352796 and 2171352805.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2171354839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1085676419 + 1085676420.

It is an arithmetic number, because the mean of its divisors is an integer number (1085676420).

Almost surely, 2^2171352839 is an apocalyptic number.

2171352839 is a deficient number, since it is larger than the sum of its proper divisors (1).

2171352839 is an equidigital number, since it uses as much as digits as its factorization.

2171352839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 2171352839 is about 46597.7771894755. Note that the first 3 decimals coincide. The cubic root of 2171352839 is about 1294.9215754299.

The spelling of 2171352839 in words is "two billion, one hundred seventy-one million, three hundred fifty-two thousand, eight hundred thirty-nine".