4038661 has 8 divisors (see below), whose sum is σ = 4525344. Its totient is φ = 3571920.

The previous prime is 4038647. The next prime is 4038667. The reversal of 4038661 is 1668304.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4038661 - 2⁷ = 4038533 is a prime.

It is a Duffinian number.

4038661 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4038667) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4555 + ... + 5368.

It is an arithmetic number, because the mean of its divisors is an integer number (565668).

Almost surely, 2^4038661 is an apocalyptic number.

It is an amenable number.

4038661 is a deficient number, since it is larger than the sum of its proper divisors (486683).

4038661 is a wasteful number, since it uses less digits than its factorization.

4038661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9971.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 4038661 is about 2009.6420079208. The cubic root of 4038661 is about 159.2498872510.

The spelling of 4038661 in words is "four million, thirty-eight thousand, six hundred sixty-one".