4009404581 has 32 divisors (see below), whose sum is σ = 5076529920. Its totient is φ = 3081867264.

The previous prime is 4009404517. The next prime is 4009404589. The reversal of 4009404581 is 1854049004.

It is a happy number.

4009404581 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4009404581 - 2⁶ = 4009404517 is a prime.

It is a super-2 number, since 2×4009404581² = 32150650188287571122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4009404589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 752555 + ... + 757863.

It is an arithmetic number, because the mean of its divisors is an integer number (158641560).

Almost surely, 2^4009404581 is an apocalyptic number.

It is an amenable number.

4009404581 is a deficient number, since it is larger than the sum of its proper divisors (1067125339).

4009404581 is a wasteful number, since it uses less digits than its factorization.

4009404581 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5565.

The product of its (nonzero) digits is 23040, while the sum is 35.

The square root of 4009404581 is about 63319.8592939056. The cubic root of 4009404581 is about 1588.6441483909.

The spelling of 4009404581 in words is "four billion, nine million, four hundred four thousand, five hundred eighty-one".