82909589 has 4 divisors (see below), whose sum is σ = 94753824. Its totient is φ = 71065356.

The previous prime is 82909583. The next prime is 82909601. The reversal of 82909589 is 98590928.

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 82909589 - 2¹⁶ = 82844053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82909583) 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, 5922107 + ... + 5922120.

It is an arithmetic number, because the mean of its divisors is an integer number (23688456).

Almost surely, 2^82909589 is an apocalyptic number.

It is an amenable number.

82909589 is a deficient number, since it is larger than the sum of its proper divisors (11844235).

82909589 is a wasteful number, since it uses less digits than its factorization.

82909589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11844234.

The product of its (nonzero) digits is 466560, while the sum is 50.

The square root of 82909589 is about 9105.4702789038. The cubic root of 82909589 is about 436.0486243921.

The spelling of 82909589 in words is "eighty-two million, nine hundred nine thousand, five hundred eighty-nine".