71393929 has 2 divisors, whose sum is σ = 71393930. Its totient is φ = 71393928.

The previous prime is 71393923. The next prime is 71393947. The reversal of 71393929 is 92939317.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58982400 + 12411529 = 7680^2 + 3523^2 .

It is a cyclic number.

It is not a de Polignac number, because 71393929 - 2³ = 71393921 is a prime.

It is not a weakly prime, because it can be changed into another prime (71393921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35696964 + 35696965.

It is an arithmetic number, because the mean of its divisors is an integer number (35696965).

Almost surely, 2^71393929 is an apocalyptic number.

It is an amenable number.

71393929 is a deficient number, since it is larger than the sum of its proper divisors (1).

71393929 is an equidigital number, since it uses as much as digits as its factorization.

71393929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 91854, while the sum is 43.

The square root of 71393929 is about 8449.4928250162. The cubic root of 71393929 is about 414.8461790213.

The spelling of 71393929 in words is "seventy-one million, three hundred ninety-three thousand, nine hundred twenty-nine".