71127489 has 4 divisors (see below), whose sum is σ = 94836656. Its totient is φ = 47418324.

The previous prime is 71127487. The next prime is 71127491. The reversal of 71127489 is 98472117.

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 an interprime number because it is at equal distance from previous prime (71127487) and next prime (71127491).

It is not a de Polignac number, because 71127489 - 2¹ = 71127487 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (71127487) 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, 11854579 + ... + 11854584.

It is an arithmetic number, because the mean of its divisors is an integer number (23709164).

Almost surely, 2^71127489 is an apocalyptic number.

It is an amenable number.

71127489 is a deficient number, since it is larger than the sum of its proper divisors (23709167).

71127489 is a wasteful number, since it uses less digits than its factorization.

71127489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23709166.

The product of its digits is 28224, while the sum is 39.

The square root of 71127489 is about 8433.7114605611. The cubic root of 71127489 is about 414.3294712120.

The spelling of 71127489 in words is "seventy-one million, one hundred twenty-seven thousand, four hundred eighty-nine".