838989071 has 2 divisors, whose sum is σ = 838989072. Its totient is φ = 838989070.

The previous prime is 838989031. The next prime is 838989077. The reversal of 838989071 is 170989838.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-838989071 is a prime.

It is a super-2 number, since 2×838989071² = 1407805322514886082, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (838989077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419494535 + 419494536.

It is an arithmetic number, because the mean of its divisors is an integer number (419494536).

Almost surely, 2^838989071 is an apocalyptic number.

838989071 is a deficient number, since it is larger than the sum of its proper divisors (1).

838989071 is an equidigital number, since it uses as much as digits as its factorization.

838989071 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 838989071 is about 28965.3080598153. The cubic root of 838989071 is about 943.1601319218.

The spelling of 838989071 in words is "eight hundred thirty-eight million, nine hundred eighty-nine thousand, seventy-one".