38661217 has 4 divisors (see below), whose sum is σ = 44184256. Its totient is φ = 33138180.

The previous prime is 38661199. The next prime is 38661223. The reversal of 38661217 is 71216683.

38661217 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 38661217 - 2¹¹ = 38659169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38661277) 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, 2761509 + ... + 2761522.

It is an arithmetic number, because the mean of its divisors is an integer number (11046064).

Almost surely, 2^38661217 is an apocalyptic number.

It is an amenable number.

38661217 is a deficient number, since it is larger than the sum of its proper divisors (5523039).

38661217 is an equidigital number, since it uses as much as digits as its factorization.

38661217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523038.

The product of its digits is 12096, while the sum is 34.

The square root of 38661217 is about 6217.8144874224. The cubic root of 38661217 is about 338.1363343668.

The spelling of 38661217 in words is "thirty-eight million, six hundred sixty-one thousand, two hundred seventeen".