8388340 has 12 divisors (see below), whose sum is σ = 17615556. Its totient is φ = 3355328.

The previous prime is 8388319. The next prime is 8388371. The reversal of 8388340 is 438838.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2108304 + 6280036 = 1452^2 + 2506^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8388296 and 8388305.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209689 + ... + 209728.

It is an arithmetic number, because the mean of its divisors is an integer number (1467963).

Almost surely, 2^8388340 is an apocalyptic number.

It is an amenable number.

8388340 is an abundant number, since it is smaller than the sum of its proper divisors (9227216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8388340 is a wasteful number, since it uses less digits than its factorization.

8388340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419426 (or 419424 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 8388340 is about 2896.2631095948. The cubic root of 8388340 is about 203.1851708132.

The spelling of 8388340 in words is "eight million, three hundred eighty-eight thousand, three hundred forty".