838384217 has 16 divisors (see below), whose sum is σ = 922731264. Its totient is φ = 755424000.

The previous prime is 838384193. The next prime is 838384231. The reversal of 838384217 is 712483838.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 838384217 - 2⁶ = 838384153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (838384817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 857633 + ... + 858609.

It is an arithmetic number, because the mean of its divisors is an integer number (57670704).

Almost surely, 2^838384217 is an apocalyptic number.

It is an amenable number.

838384217 is a deficient number, since it is larger than the sum of its proper divisors (84347047).

838384217 is a wasteful number, since it uses less digits than its factorization.

838384217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1600.

The product of its digits is 258048, while the sum is 44.

The square root of 838384217 is about 28954.8651697776. The cubic root of 838384217 is about 942.9334260190.

The spelling of 838384217 in words is "eight hundred thirty-eight million, three hundred eighty-four thousand, two hundred seventeen".