4478906 has 4 divisors (see below), whose sum is σ = 6718362. Its totient is φ = 2239452.

The previous prime is 4478899. The next prime is 4478917. The reversal of 4478906 is 6098744.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 2544025 + 1934881 = 1595^2 + 1391^2 .

It is a d-powerful number, because it can be written as 4⁶ + 4¹¹ + 7² + 8³ + 9 + 0 + 6⁷ .

It is a self number, because there is not a number n which added to its sum of digits gives 4478906.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119725 + ... + 1119728.

Almost surely, 2^4478906 is an apocalyptic number.

4478906 is a deficient number, since it is larger than the sum of its proper divisors (2239456).

4478906 is a wasteful number, since it uses less digits than its factorization.

4478906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239455.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 4478906 is about 2116.3425998642. The cubic root of 4478906 is about 164.8379921912.

The spelling of 4478906 in words is "four million, four hundred seventy-eight thousand, nine hundred six".