838967869 has 2 divisors, whose sum is σ = 838967870. Its totient is φ = 838967868.

The previous prime is 838967839. The next prime is 838967887. The reversal of 838967869 is 968769838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 473584644 + 365383225 = 21762^2 + 19115^2 .

It is a cyclic number.

It is not a de Polignac number, because 838967869 - 2⁵ = 838967837 is a prime.

It is a super-2 number, since 2×838967869² = 1407734170428802322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 838967869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838967839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419483934 + 419483935.

It is an arithmetic number, because the mean of its divisors is an integer number (419483935).

Almost surely, 2^838967869 is an apocalyptic number.

It is an amenable number.

838967869 is a deficient number, since it is larger than the sum of its proper divisors (1).

838967869 is an equidigital number, since it uses as much as digits as its factorization.

838967869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 64.

The square root of 838967869 is about 28964.9420679552. The cubic root of 838967869 is about 943.1521870231.

The spelling of 838967869 in words is "eight hundred thirty-eight million, nine hundred sixty-seven thousand, eight hundred sixty-nine".