8439478 has 16 divisors (see below), whose sum is σ = 13228560. Its totient is φ = 4034016.

The previous prime is 8439469. The next prime is 8439479. The reversal of 8439478 is 8749348.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8439479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3400 + ... + 5332.

It is an arithmetic number, because the mean of its divisors is an integer number (826785).

Almost surely, 2^8439478 is an apocalyptic number.

8439478 is a deficient number, since it is larger than the sum of its proper divisors (4789082).

8439478 is a wasteful number, since it uses less digits than its factorization.

8439478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2031.

The product of its digits is 193536, while the sum is 43.

The square root of 8439478 is about 2905.0779679726. The cubic root of 8439478 is about 203.5972284996.

It can be divided in two parts, 843947 and 8, that multiplied together give a palindrome (6751576).

The spelling of 8439478 in words is "eight million, four hundred thirty-nine thousand, four hundred seventy-eight".