38638441 has 4 divisors (see below), whose sum is σ = 39580884. Its totient is φ = 37696000.

The previous prime is 38638427. The next prime is 38638447. The reversal of 38638441 is 14483683.

38638441 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8826841 + 29811600 = 2971^2 + 5460^2 .

It is a cyclic number.

It is not a de Polignac number, because 38638441 - 2¹⁵ = 38605673 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 38638441.

It is not an unprimeable number, because it can be changed into a prime (38638447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 471160 + ... + 471241.

It is an arithmetic number, because the mean of its divisors is an integer number (9895221).

Almost surely, 2^38638441 is an apocalyptic number.

It is an amenable number.

38638441 is a deficient number, since it is larger than the sum of its proper divisors (942443).

38638441 is an equidigital number, since it uses as much as digits as its factorization.

38638441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 942442.

The product of its digits is 55296, while the sum is 37.

The square root of 38638441 is about 6215.9827058961. The cubic root of 38638441 is about 338.0699206445.

The spelling of 38638441 in words is "thirty-eight million, six hundred thirty-eight thousand, four hundred forty-one".