71413729 has 4 divisors (see below), whose sum is σ = 71436976. Its totient is φ = 71390484.

The previous prime is 71413721. The next prime is 71413807. The reversal of 71413729 is 92731417.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 71413729 - 2³ = 71413721 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71413694 and 71413703.

It is not an unprimeable number, because it can be changed into a prime (71413721) 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 in 3 ways as a sum of consecutive naturals, for example, 6159 + ... + 13444.

It is an arithmetic number, because the mean of its divisors is an integer number (17859244).

Almost surely, 2^71413729 is an apocalyptic number.

It is an amenable number.

71413729 is a deficient number, since it is larger than the sum of its proper divisors (23247).

71413729 is a wasteful number, since it uses less digits than its factorization.

71413729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23246.

The product of its digits is 10584, while the sum is 34.

The square root of 71413729 is about 8450.6644117489. The cubic root of 71413729 is about 414.8845258632.

The spelling of 71413729 in words is "seventy-one million, four hundred thirteen thousand, seven hundred twenty-nine".