71044407 has 24 divisors (see below), whose sum is σ = 117546624. Its totient is φ = 40504464.

The previous prime is 71044381. The next prime is 71044409. The reversal of 71044407 is 70444017.

It is not a de Polignac number, because 71044407 - 2¹² = 71040311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71044409) 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 23 ways as a sum of consecutive naturals, for example, 34468 + ... + 36470.

It is an arithmetic number, because the mean of its divisors is an integer number (4897776).

Almost surely, 2^71044407 is an apocalyptic number.

71044407 is a deficient number, since it is larger than the sum of its proper divisors (46502217).

71044407 is a wasteful number, since it uses less digits than its factorization.

71044407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2579 (or 2576 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 27.

The square root of 71044407 is about 8428.7844319332. The cubic root of 71044407 is about 414.1680861962.

It can be divided in two parts, 7104 and 4407, that added together give a palindrome (11511).

The spelling of 71044407 in words is "seventy-one million, forty-four thousand, four hundred seven".