838887229 has 2 divisors, whose sum is σ = 838887230. Its totient is φ = 838887228.

The previous prime is 838887209. The next prime is 838887239. The reversal of 838887229 is 922788838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 801003204 + 37884025 = 28302^2 + 6155^2 .

It is a cyclic number.

It is not a de Polignac number, because 838887229 - 2⁹ = 838886717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 838887229.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838887209) 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 as a sum of consecutive naturals, namely, 419443614 + 419443615.

It is an arithmetic number, because the mean of its divisors is an integer number (419443615).

Almost surely, 2^838887229 is an apocalyptic number.

It is an amenable number.

838887229 is a deficient number, since it is larger than the sum of its proper divisors (1).

838887229 is an equidigital number, since it uses as much as digits as its factorization.

838887229 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 55.

The square root of 838887229 is about 28963.5500068621. The cubic root of 838887229 is about 943.1219680552.

The spelling of 838887229 in words is "eight hundred thirty-eight million, eight hundred eighty-seven thousand, two hundred twenty-nine".