71329039 has 2 divisors, whose sum is σ = 71329040. Its totient is φ = 71329038.

The previous prime is 71329031. The next prime is 71329079. The reversal of 71329039 is 93092317.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71329039 - 2³ = 71329031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71328995 and 71329013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71329031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35664519 + 35664520.

It is an arithmetic number, because the mean of its divisors is an integer number (35664520).

Almost surely, 2^71329039 is an apocalyptic number.

71329039 is a deficient number, since it is larger than the sum of its proper divisors (1).

71329039 is an equidigital number, since it uses as much as digits as its factorization.

71329039 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 34.

The square root of 71329039 is about 8445.6520766605. The cubic root of 71329039 is about 414.7204562475.

The spelling of 71329039 in words is "seventy-one million, three hundred twenty-nine thousand, thirty-nine".