838943089 has 2 divisors, whose sum is σ = 838943090. Its totient is φ = 838943088.

The previous prime is 838943051. The next prime is 838943093. The reversal of 838943089 is 980349838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 730783089 + 108160000 = 27033^2 + 10400^2 .

It is a cyclic number.

It is not a de Polignac number, because 838943089 - 2⁷ = 838942961 is a prime.

It is not a weakly prime, because it can be changed into another prime (838943389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 419471544 + 419471545.

It is an arithmetic number, because the mean of its divisors is an integer number (419471545).

Almost surely, 2^838943089 is an apocalyptic number.

It is an amenable number.

838943089 is a deficient number, since it is larger than the sum of its proper divisors (1).

838943089 is an equidigital number, since it uses as much as digits as its factorization.

838943089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 52.

The square root of 838943089 is about 28964.5143063025. The cubic root of 838943089 is about 943.1429011922.

The spelling of 838943089 in words is "eight hundred thirty-eight million, nine hundred forty-three thousand, eighty-nine".