38666849 has 8 divisors (see below), whose sum is σ = 41873832. Its totient is φ = 35493120.

The previous prime is 38666833. The next prime is 38666861. The reversal of 38666849 is 94866683.

It can be written as a sum of positive squares in 4 ways, for example, as 1456849 + 37210000 = 1207^2 + 6100^2 .

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

It is not a de Polignac number, because 38666849 - 2⁴ = 38666833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 38666797 and 38666806.

It is not an unprimeable number, because it can be changed into a prime (38666249) 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, 5864 + ... + 10569.

It is an arithmetic number, because the mean of its divisors is an integer number (5234229).

Almost surely, 2^38666849 is an apocalyptic number.

It is an amenable number.

38666849 is a deficient number, since it is larger than the sum of its proper divisors (3206983).

38666849 is a wasteful number, since it uses less digits than its factorization.

38666849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16627.

The product of its digits is 1492992, while the sum is 50.

The square root of 38666849 is about 6218.2673631808. The cubic root of 38666849 is about 338.1527529857.

The spelling of 38666849 in words is "thirty-eight million, six hundred sixty-six thousand, eight hundred forty-nine".