71199844 has 9 divisors (see below), whose sum is σ = 124629267. Its totient is φ = 35591484.

The previous prime is 71199811. The next prime is 71199851. The reversal of 71199844 is 44899117.

The square root of 71199844 is 8438.

It is a perfect power (a square), and thus also a powerful number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71199844.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 14767 + ... + 18985.

Almost surely, 2^71199844 is an apocalyptic number.

71199844 is the 8438-th square number.

It is an amenable number.

71199844 is a deficient number, since it is larger than the sum of its proper divisors (53429423).

71199844 is an frugal number, since it uses more digits than its factorization.

71199844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8442 (or 4221 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The cubic root of 71199844 is about 414.4699169087.

The spelling of 71199844 in words is "seventy-one million, one hundred ninety-nine thousand, eight hundred forty-four".