71889589 has 4 divisors (see below), whose sum is σ = 74208640. Its totient is φ = 69570540.

The previous prime is 71889581. The next prime is 71889613. The reversal of 71889589 is 98598817.

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 71889589 - 2³ = 71889581 is a prime.

It is a super-2 number, since 2×71889589² = 10336226013177842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71889581) 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 3 ways as a sum of consecutive naturals, for example, 1159479 + ... + 1159540.

It is an arithmetic number, because the mean of its divisors is an integer number (18552160).

Almost surely, 2^71889589 is an apocalyptic number.

It is an amenable number.

71889589 is a deficient number, since it is larger than the sum of its proper divisors (2319051).

71889589 is a wasteful number, since it uses less digits than its factorization.

71889589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2319050.

The product of its digits is 1451520, while the sum is 55.

The square root of 71889589 is about 8478.7728475293. The cubic root of 71889589 is about 415.8040038412.

The spelling of 71889589 in words is "seventy-one million, eight hundred eighty-nine thousand, five hundred eighty-nine".