71469729 has 8 divisors (see below), whose sum is σ = 105881120. Its totient is φ = 47646468.

The previous prime is 71469719. The next prime is 71469731. The reversal of 71469729 is 92796417.

It is a de Polignac number, because none of the positive numbers 2^k-71469729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71469719) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1323487 + ... + 1323540.

It is an arithmetic number, because the mean of its divisors is an integer number (13235140).

Almost surely, 2^71469729 is an apocalyptic number.

It is an amenable number.

71469729 is a deficient number, since it is larger than the sum of its proper divisors (34411391).

71469729 is a wasteful number, since it uses less digits than its factorization.

71469729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2647036 (or 2647030 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 71469729 is about 8453.9771113956. The cubic root of 71469729 is about 414.9929432196.

The spelling of 71469729 in words is "seventy-one million, four hundred sixty-nine thousand, seven hundred twenty-nine".