8340478 has 8 divisors (see below), whose sum is σ = 12532968. Its totient is φ = 4162824.

The previous prime is 8340473. The next prime is 8340509. The reversal of 8340478 is 8740438.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8340473) 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 3 ways as a sum of consecutive naturals, for example, 2176 + ... + 4627.

It is an arithmetic number, because the mean of its divisors is an integer number (1566621).

Almost surely, 2^8340478 is an apocalyptic number.

8340478 is a deficient number, since it is larger than the sum of its proper divisors (4192490).

8340478 is a wasteful number, since it uses less digits than its factorization.

8340478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7418.

The product of its (nonzero) digits is 21504, while the sum is 34.

The square root of 8340478 is about 2887.9885733846. The cubic root of 8340478 is about 202.7979903762.

The spelling of 8340478 in words is "eight million, three hundred forty thousand, four hundred seventy-eight".