82786399 has 8 divisors (see below), whose sum is σ = 86216832. Its totient is φ = 79403520.

The previous prime is 82786397. The next prime is 82786433. The reversal of 82786399 is 99368728.

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 82786399 - 2¹ = 82786397 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 (82786397) 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, 8314 + ... + 15319.

It is an arithmetic number, because the mean of its divisors is an integer number (10777104).

Almost surely, 2^82786399 is an apocalyptic number.

82786399 is a deficient number, since it is larger than the sum of its proper divisors (3430433).

82786399 is a wasteful number, since it uses less digits than its factorization.

82786399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23777.

The product of its digits is 1306368, while the sum is 52.

The square root of 82786399 is about 9098.7031493505. The cubic root of 82786399 is about 435.8325518507.

The spelling of 82786399 in words is "eighty-two million, seven hundred eighty-six thousand, three hundred ninety-nine".