71589389 has 4 divisors (see below), whose sum is σ = 71861856. Its totient is φ = 71316924.

The previous prime is 71589383. The next prime is 71589407. The reversal of 71589389 is 98398517.

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 71589389 - 2⁴ = 71589373 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 (71589383) 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, 135839 + ... + 136364.

It is an arithmetic number, because the mean of its divisors is an integer number (17965464).

Almost surely, 2^71589389 is an apocalyptic number.

It is an amenable number.

71589389 is a deficient number, since it is larger than the sum of its proper divisors (272467).

71589389 is a wasteful number, since it uses less digits than its factorization.

71589389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272466.

The product of its digits is 544320, while the sum is 50.

The square root of 71589389 is about 8461.0512940178. The cubic root of 71589389 is about 415.2244182244.

The spelling of 71589389 in words is "seventy-one million, five hundred eighty-nine thousand, three hundred eighty-nine".