71039147 has 8 divisors (see below), whose sum is σ = 72540720. Its totient is φ = 69552000.

The previous prime is 71039131. The next prime is 71039153. The reversal of 71039147 is 74193017.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71039147 - 2⁴ = 71039131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (71039117) 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, 6647 + ... + 13647.

It is an arithmetic number, because the mean of its divisors is an integer number (9067590).

Almost surely, 2^71039147 is an apocalyptic number.

71039147 is a deficient number, since it is larger than the sum of its proper divisors (1501573).

71039147 is a wasteful number, since it uses less digits than its factorization.

71039147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7213.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 71039147 is about 8428.4724001446. The cubic root of 71039147 is about 414.1578645241.

The spelling of 71039147 in words is "seventy-one million, thirty-nine thousand, one hundred forty-seven".