4138621 has 8 divisors (see below), whose sum is σ = 4278560. Its totient is φ = 4000752.

The previous prime is 4138609. The next prime is 4138627. The reversal of 4138621 is 1268314.

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

It is a cyclic number.

It is not a de Polignac number, because 4138621 - 2²¹ = 2041469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4138627) 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, 4246 + ... + 5128.

It is an arithmetic number, because the mean of its divisors is an integer number (534820).

Almost surely, 2^4138621 is an apocalyptic number.

It is an amenable number.

4138621 is a deficient number, since it is larger than the sum of its proper divisors (139939).

4138621 is a wasteful number, since it uses less digits than its factorization.

4138621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035.

The product of its digits is 1152, while the sum is 25.

The square root of 4138621 is about 2034.3600959516. The cubic root of 4138621 is about 160.5530471031.

The spelling of 4138621 in words is "four million, one hundred thirty-eight thousand, six hundred twenty-one".