71444293 has 4 divisors (see below), whose sum is σ = 71491680. Its totient is φ = 71396908.

The previous prime is 71444273. The next prime is 71444309. The reversal of 71444293 is 39244417.

It is a happy number.

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 not a de Polignac number, because 71444293 - 2²⁵ = 37889861 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 (71444273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21355 + ... + 24472.

It is an arithmetic number, because the mean of its divisors is an integer number (17872920).

Almost surely, 2^71444293 is an apocalyptic number.

It is an amenable number.

71444293 is a deficient number, since it is larger than the sum of its proper divisors (47387).

71444293 is a wasteful number, since it uses less digits than its factorization.

71444293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47386.

The product of its digits is 24192, while the sum is 34.

The square root of 71444293 is about 8452.4725968204. The cubic root of 71444293 is about 414.9437055300.

The spelling of 71444293 in words is "seventy-one million, four hundred forty-four thousand, two hundred ninety-three".