82586909 has 4 divisors (see below), whose sum is σ = 83582016. Its totient is φ = 81591804.

The previous prime is 82586887. The next prime is 82586929. The reversal of 82586909 is 90968528.

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 82586909 - 2⁸ = 82586653 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 (82586929) 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, 497429 + ... + 497594.

It is an arithmetic number, because the mean of its divisors is an integer number (20895504).

Almost surely, 2^82586909 is an apocalyptic number.

It is an amenable number.

82586909 is a deficient number, since it is larger than the sum of its proper divisors (995107).

82586909 is an equidigital number, since it uses as much as digits as its factorization.

82586909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995106.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 82586909 is about 9087.7339859835. The cubic root of 82586909 is about 435.4821957261.

The spelling of 82586909 in words is "eighty-two million, five hundred eighty-six thousand, nine hundred nine".