71044039 has 8 divisors (see below), whose sum is σ = 77980032. Its totient is φ = 64187640.

The previous prime is 71044031. The next prime is 71044049. The reversal of 71044039 is 93044017.

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

It is not a de Polignac number, because 71044039 - 2³ = 71044031 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 71043998 and 71044016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71044031) 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 7 ways as a sum of consecutive naturals, for example, 18019 + ... + 21604.

It is an arithmetic number, because the mean of its divisors is an integer number (9747504).

Almost surely, 2^71044039 is an apocalyptic number.

71044039 is a deficient number, since it is larger than the sum of its proper divisors (6935993).

71044039 is a wasteful number, since it uses less digits than its factorization.

71044039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39797.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 71044039 is about 8428.7626019482. The cubic root of 71044039 is about 414.1673710842.

The spelling of 71044039 in words is "seventy-one million, forty-four thousand, thirty-nine".