71734939 has 2 divisors, whose sum is σ = 71734940. Its totient is φ = 71734938.

The previous prime is 71734931. The next prime is 71734997. The reversal of 71734939 is 93943717.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 71734939 - 2³ = 71734931 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 71734895 and 71734904.

It is not a weakly prime, because it can be changed into another prime (71734931) 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, 35867469 + 35867470.

It is an arithmetic number, because the mean of its divisors is an integer number (35867470).

Almost surely, 2^71734939 is an apocalyptic number.

71734939 is a deficient number, since it is larger than the sum of its proper divisors (1).

71734939 is an equidigital number, since it uses as much as digits as its factorization.

71734939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 142884, while the sum is 43.

The square root of 71734939 is about 8469.6481036700. The cubic root of 71734939 is about 415.5056284393.

The spelling of 71734939 in words is "seventy-one million, seven hundred thirty-four thousand, nine hundred thirty-nine".