4009472 has 40 divisors (see below), whose sum is σ = 8249472. Its totient is φ = 1945600.

The previous prime is 4009451. The next prime is 4009477. The reversal of 4009472 is 2749004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4009477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20897 + ... + 21087.

Almost surely, 2^4009472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4009472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4124736).

4009472 is an abundant number, since it is smaller than the sum of its proper divisors (4240000).

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

4009472 is an equidigital number, since it uses as much as digits as its factorization.

4009472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 4009472 is about 2002.3665998013. The cubic root of 4009472 is about 158.8653052805.

The spelling of 4009472 in words is "four million, nine thousand, four hundred seventy-two".