4009056 has 24 divisors (see below), whose sum is σ = 10524024. Its totient is φ = 1336320.

The previous prime is 4009051. The next prime is 4009091. The reversal of 4009056 is 6509004.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×4009056² = 32145060022272, which contains 22 as substring.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4009051) 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, 20785 + ... + 20976.

It is an arithmetic number, because the mean of its divisors is an integer number (438501).

Almost surely, 2^4009056 is an apocalyptic number.

It is an amenable number.

4009056 is an abundant number, since it is smaller than the sum of its proper divisors (6514968).

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

4009056 is a wasteful number, since it uses less digits than its factorization.

4009056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41774 (or 41766 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 4009056 is about 2002.2627200245. The cubic root of 4009056 is about 158.8598107705.

The spelling of 4009056 in words is "four million, nine thousand, fifty-six".