82818249 has 4 divisors (see below), whose sum is σ = 110424336. Its totient is φ = 55212164.

The previous prime is 82818233. The next prime is 82818257. The reversal of 82818249 is 94281828.

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 82818249 - 2⁴ = 82818233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 82818249.

It is not an unprimeable number, because it can be changed into a prime (82818259) 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, 13803039 + ... + 13803044.

It is an arithmetic number, because the mean of its divisors is an integer number (27606084).

Almost surely, 2^82818249 is an apocalyptic number.

It is an amenable number.

82818249 is a deficient number, since it is larger than the sum of its proper divisors (27606087).

82818249 is a wasteful number, since it uses less digits than its factorization.

82818249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27606086.

The product of its digits is 73728, while the sum is 42.

The square root of 82818249 is about 9100.4532304715. The cubic root of 82818249 is about 435.8884365820. Note that the first 3 decimals are identical.

The spelling of 82818249 in words is "eighty-two million, eight hundred eighteen thousand, two hundred forty-nine".