8394406340 has 48 divisors (see below), whose sum is σ = 18663462720. Its totient is φ = 3162625920.

The previous prime is 8394406303. The next prime is 8394406357. The reversal of 8394406340 is 436044938.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1895 + ... + 129585.

It is an arithmetic number, because the mean of its divisors is an integer number (388822140).

Almost surely, 2^8394406340 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 8394406340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9331731360).

8394406340 is an abundant number, since it is smaller than the sum of its proper divisors (10269056380).

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

8394406340 is a wasteful number, since it uses less digits than its factorization.

8394406340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127892 (or 127890 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 41.

The square root of 8394406340 is about 91620.9929000990. The cubic root of 8394406340 is about 2032.3413931457.

The spelling of 8394406340 in words is "eight billion, three hundred ninety-four million, four hundred six thousand, three hundred forty".