71352839 has 2 divisors, whose sum is σ = 71352840. Its totient is φ = 71352838.

The previous prime is 71352823. The next prime is 71352857. The reversal of 71352839 is 93825317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71352839 - 2⁴ = 71352823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71352899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35676419 + 35676420.

It is an arithmetic number, because the mean of its divisors is an integer number (35676420).

Almost surely, 2^71352839 is an apocalyptic number.

71352839 is a deficient number, since it is larger than the sum of its proper divisors (1).

71352839 is an equidigital number, since it uses as much as digits as its factorization.

71352839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 45360, while the sum is 38.

The square root of 71352839 is about 8447.0609681711. The cubic root of 71352839 is about 414.7665770112.

The spelling of 71352839 in words is "seventy-one million, three hundred fifty-two thousand, eight hundred thirty-nine".