8738839 has 2 divisors, whose sum is σ = 8738840. Its totient is φ = 8738838.

The previous prime is 8738837. The next prime is 8738843. The reversal of 8738839 is 9388378.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8738839 - 2¹ = 8738837 is a prime.

Together with 8738837, it forms a pair of twin primes.

8738839 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8738837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4369419 + 4369420.

It is an arithmetic number, because the mean of its divisors is an integer number (4369420).

Almost surely, 2^8738839 is an apocalyptic number.

8738839 is a deficient number, since it is larger than the sum of its proper divisors (1).

8738839 is an equidigital number, since it uses as much as digits as its factorization.

8738839 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 46.

The square root of 8738839 is about 2956.1527362435. The cubic root of 8738839 is about 205.9766131115.

The spelling of 8738839 in words is "eight million, seven hundred thirty-eight thousand, eight hundred thirty-nine".