71444797 has 4 divisors (see below), whose sum is σ = 71482336. Its totient is φ = 71407260.

The previous prime is 71444783. The next prime is 71444803. The reversal of 71444797 is 79744417.

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 a de Polignac number, because none of the positive numbers 2^k-71444797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71444707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15753 + ... + 19774.

It is an arithmetic number, because the mean of its divisors is an integer number (17870584).

Almost surely, 2^71444797 is an apocalyptic number.

It is an amenable number.

71444797 is a deficient number, since it is larger than the sum of its proper divisors (37539).

71444797 is a wasteful number, since it uses less digits than its factorization.

71444797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37538.

The product of its digits is 197568, while the sum is 43.

The square root of 71444797 is about 8452.5024105291. The cubic root of 71444797 is about 414.9446812605.

It can be divided in two parts, 7 and 1444797, that added together give a square (1444804 = 1202²).

The spelling of 71444797 in words is "seventy-one million, four hundred forty-four thousand, seven hundred ninety-seven".