838884997 has 2 divisors, whose sum is σ = 838884998. Its totient is φ = 838884996.

The previous prime is 838884973. The next prime is 838885031. The reversal of 838884997 is 799488838.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 766957636 + 71927361 = 27694^2 + 8481^2 .

It is a cyclic number.

It is not a de Polignac number, because 838884997 - 2¹⁵ = 838852229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838884947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419442498 + 419442499.

It is an arithmetic number, because the mean of its divisors is an integer number (419442499).

Almost surely, 2^838884997 is an apocalyptic number.

It is an amenable number.

838884997 is a deficient number, since it is larger than the sum of its proper divisors (1).

838884997 is an equidigital number, since it uses as much as digits as its factorization.

838884997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27869184, while the sum is 64.

The square root of 838884997 is about 28963.5114756481. The cubic root of 838884997 is about 943.1211316098.

The spelling of 838884997 in words is "eight hundred thirty-eight million, eight hundred eighty-four thousand, nine hundred ninety-seven".