838786913 has 2 divisors, whose sum is σ = 838786914. Its totient is φ = 838786912.

The previous prime is 838786891. The next prime is 838786943. The reversal of 838786913 is 319687838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 492529249 + 346257664 = 22193^2 + 18608^2 .

It is a cyclic number.

It is not a de Polignac number, because 838786913 - 2⁶ = 838786849 is a prime.

It is not a weakly prime, because it can be changed into another prime (838786943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419393456 + 419393457.

It is an arithmetic number, because the mean of its divisors is an integer number (419393457).

Almost surely, 2^838786913 is an apocalyptic number.

It is an amenable number.

838786913 is a deficient number, since it is larger than the sum of its proper divisors (1).

838786913 is an equidigital number, since it uses as much as digits as its factorization.

838786913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1741824, while the sum is 53.

The square root of 838786913 is about 28961.8181922337. The cubic root of 838786913 is about 943.0843730160.

The spelling of 838786913 in words is "eight hundred thirty-eight million, seven hundred eighty-six thousand, nine hundred thirteen".