838787141 has 2 divisors, whose sum is σ = 838787142. Its totient is φ = 838787140.

The previous prime is 838787041. The next prime is 838787153. The reversal of 838787141 is 141787838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 608658241 + 230128900 = 24671^2 + 15170^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838787141 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838787041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419393570 + 419393571.

It is an arithmetic number, because the mean of its divisors is an integer number (419393571).

Almost surely, 2^838787141 is an apocalyptic number.

It is an amenable number.

838787141 is a deficient number, since it is larger than the sum of its proper divisors (1).

838787141 is an equidigital number, since it uses as much as digits as its factorization.

838787141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 301056, while the sum is 47.

The square root of 838787141 is about 28961.8221284504. The cubic root of 838787141 is about 943.0844584661.

It can be divided in two parts, 83878 and 7141, that added together give a palindrome (91019).

The spelling of 838787141 in words is "eight hundred thirty-eight million, seven hundred eighty-seven thousand, one hundred forty-one".