4478406 has 16 divisors (see below), whose sum is σ = 9199344. Its totient is φ = 1452384.

The previous prime is 4478387. The next prime is 4478413. The reversal of 4478406 is 6048744.

It is a super-2 number, since 2×4478406² = 40112240601672, 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 in 7 ways as a sum of consecutive naturals, for example, 9865 + ... + 10308.

It is an arithmetic number, because the mean of its divisors is an integer number (574959).

Almost surely, 2^4478406 is an apocalyptic number.

4478406 is an abundant number, since it is smaller than the sum of its proper divisors (4720938).

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

4478406 is a wasteful number, since it uses less digits than its factorization.

4478406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20215.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 4478406 is about 2116.2244682453. The cubic root of 4478406 is about 164.8318580993.

It can be divided in two parts, 4478 and 406, that added together give a palindrome (4884).

The spelling of 4478406 in words is "four million, four hundred seventy-eight thousand, four hundred six".