8340408 has 80 divisors (see below), whose sum is σ = 23856360. Its totient is φ = 2721600.

The previous prime is 8340403. The next prime is 8340419. The reversal of 8340408 is 8040438.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8340401) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 39423 + ... + 39633.

Almost surely, 2^8340408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8340408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11928180).

8340408 is an abundant number, since it is smaller than the sum of its proper divisors (15515952).

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

8340408 is a wasteful number, since it uses less digits than its factorization.

8340408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 8340408 is about 2887.9764541976. The cubic root of 8340408 is about 202.7974230267.

The spelling of 8340408 in words is "eight million, three hundred forty thousand, four hundred eight".