71276939 has 2 divisors, whose sum is σ = 71276940. Its totient is φ = 71276938.

The previous prime is 71276921. The next prime is 71276951. The reversal of 71276939 is 93967217.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 71276939 - 2¹² = 71272843 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 71276939.

It is not a weakly prime, because it can be changed into another prime (71276339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35638469 + 35638470.

It is an arithmetic number, because the mean of its divisors is an integer number (35638470).

Almost surely, 2^71276939 is an apocalyptic number.

71276939 is a deficient number, since it is larger than the sum of its proper divisors (1).

71276939 is an equidigital number, since it uses as much as digits as its factorization.

71276939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 44.

The square root of 71276939 is about 8442.5670859046. The cubic root of 71276939 is about 414.6194585851.

The spelling of 71276939 in words is "seventy-one million, two hundred seventy-six thousand, nine hundred thirty-nine".