82869211 has 4 divisors (see below), whose sum is σ = 85726800. Its totient is φ = 80011624.

The previous prime is 82869209. The next prime is 82869223. The reversal of 82869211 is 11296828.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 82869211 - 2¹ = 82869209 is a prime.

It is a super-2 number, since 2×82869211² = 13734612263525042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (82869511) 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 3 ways as a sum of consecutive naturals, for example, 1428751 + ... + 1428808.

It is an arithmetic number, because the mean of its divisors is an integer number (21431700).

Almost surely, 2^82869211 is an apocalyptic number.

82869211 is a deficient number, since it is larger than the sum of its proper divisors (2857589).

82869211 is a wasteful number, since it uses less digits than its factorization.

82869211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857588.

The product of its digits is 13824, while the sum is 37.

The square root of 82869211 is about 9103.2527703014. The cubic root of 82869211 is about 435.9778258650.

The spelling of 82869211 in words is "eighty-two million, eight hundred sixty-nine thousand, two hundred eleven".