8240869 has 24 divisors (see below), whose sum is σ = 10945368. Its totient is φ = 6128640.

The previous prime is 8240867. The next prime is 8240873. The reversal of 8240869 is 9680428.

It can be written as a sum of positive squares in 4 ways, for example, as 3969 + 8236900 = 63^2 + 2870^2 .

It is not a de Polignac number, because 8240869 - 2¹ = 8240867 is a prime.

It is a super-2 number, since 2×8240869² = 135823843750322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8240861) 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 23 ways as a sum of consecutive naturals, for example, 10449 + ... + 11209.

It is an arithmetic number, because the mean of its divisors is an integer number (456057).

Almost surely, 2^8240869 is an apocalyptic number.

It is an amenable number.

8240869 is a deficient number, since it is larger than the sum of its proper divisors (2704499).

8240869 is a wasteful number, since it uses less digits than its factorization.

8240869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 8240869 is about 2870.6913801382. The cubic root of 8240869 is about 201.9874269206.

The spelling of 8240869 in words is "eight million, two hundred forty thousand, eight hundred sixty-nine".