8478422 has 4 divisors (see below), whose sum is σ = 12717636. Its totient is φ = 4239210.

The previous prime is 8478391. The next prime is 8478433. The reversal of 8478422 is 2248748.

8478422 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×8478422² = 143767279220168, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2119604 + ... + 2119607.

It is an arithmetic number, because the mean of its divisors is an integer number (3179409).

Almost surely, 2^8478422 is an apocalyptic number.

8478422 is a deficient number, since it is larger than the sum of its proper divisors (4239214).

8478422 is a wasteful number, since it uses less digits than its factorization.

8478422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239213.

The product of its digits is 28672, while the sum is 35.

The square root of 8478422 is about 2911.7729993940. The cubic root of 8478422 is about 203.9099147294.

The spelling of 8478422 in words is "eight million, four hundred seventy-eight thousand, four hundred twenty-two".