71791429 has 2 divisors, whose sum is σ = 71791430. Its totient is φ = 71791428.

The previous prime is 71791427. The next prime is 71791457. The reversal of 71791429 is 92419717.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68442529 + 3348900 = 8273^2 + 1830^2 .

It is a cyclic number.

It is not a de Polignac number, because 71791429 - 2¹ = 71791427 is a prime.

Together with 71791427, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 71791391 and 71791400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (71791427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35895714 + 35895715.

It is an arithmetic number, because the mean of its divisors is an integer number (35895715).

Almost surely, 2^71791429 is an apocalyptic number.

It is an amenable number.

71791429 is a deficient number, since it is larger than the sum of its proper divisors (1).

71791429 is an equidigital number, since it uses as much as digits as its factorization.

71791429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31752, while the sum is 40.

The square root of 71791429 is about 8472.9822966887. The cubic root of 71791429 is about 415.6146676083.

The spelling of 71791429 in words is "seventy-one million, seven hundred ninety-one thousand, four hundred twenty-nine".