71960039 has 2 divisors, whose sum is σ = 71960040. Its totient is φ = 71960038.

The previous prime is 71960029. The next prime is 71960041. The reversal of 71960039 is 93006917.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-71960039 is a prime.

Together with 71960041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 71959990 and 71960008.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71960029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35980019 + 35980020.

It is an arithmetic number, because the mean of its divisors is an integer number (35980020).

Almost surely, 2^71960039 is an apocalyptic number.

71960039 is a deficient number, since it is larger than the sum of its proper divisors (1).

71960039 is an equidigital number, since it uses as much as digits as its factorization.

71960039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10206, while the sum is 35.

The square root of 71960039 is about 8482.9263229148. The cubic root of 71960039 is about 415.9397853396.

The spelling of 71960039 in words is "seventy-one million, nine hundred sixty thousand, thirty-nine".