82918389 has 8 divisors (see below), whose sum is σ = 110607552. Its totient is φ = 55254080.

The previous prime is 82918357. The next prime is 82918393. The reversal of 82918389 is 98381928.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82918389 - 2⁵ = 82918357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82918189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3949 + ... + 13469.

It is an arithmetic number, because the mean of its divisors is an integer number (13825944).

Almost surely, 2^82918389 is an apocalyptic number.

It is an amenable number.

82918389 is a deficient number, since it is larger than the sum of its proper divisors (27689163).

82918389 is a wasteful number, since it uses less digits than its factorization.

82918389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12427.

The product of its digits is 248832, while the sum is 48.

The square root of 82918389 is about 9105.9534920842. The cubic root of 82918389 is about 436.0640512050.

The spelling of 82918389 in words is "eighty-two million, nine hundred eighteen thousand, three hundred eighty-nine".