8390340 has 72 divisors (see below), whose sum is σ = 29090880. Its totient is φ = 1917504.

The previous prime is 8390329. The next prime is 8390351. The reversal of 8390340 is 430938.

It is an interprime number because it is at equal distance from previous prime (8390329) and next prime (8390351).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2070 + ... + 4589.

It is an arithmetic number, because the mean of its divisors is an integer number (404040).

Almost surely, 2^8390340 is an apocalyptic number.

It is an amenable number.

8390340 is an abundant number, since it is smaller than the sum of its proper divisors (20700540).

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

8390340 is a wasteful number, since it uses less digits than its factorization.

8390340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6681 (or 6676 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 8390340 is about 2896.6083615152. The cubic root of 8390340 is about 203.2013177524.

The spelling of 8390340 in words is "eight million, three hundred ninety thousand, three hundred forty".