85238339 has 2 divisors, whose sum is σ = 85238340. Its totient is φ = 85238338.

The previous prime is 85238317. The next prime is 85238347. The reversal of 85238339 is 93383258.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-85238339 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 85238296 and 85238305.

It is not a weakly prime, because it can be changed into another prime (85238369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42619169 + 42619170.

It is an arithmetic number, because the mean of its divisors is an integer number (42619170).

Almost surely, 2^85238339 is an apocalyptic number.

85238339 is a deficient number, since it is larger than the sum of its proper divisors (1).

85238339 is an equidigital number, since it uses as much as digits as its factorization.

85238339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 85238339 is about 9232.4611561598. The cubic root of 85238339 is about 440.0935389976.

The spelling of 85238339 in words is "eighty-five million, two hundred thirty-eight thousand, three hundred thirty-nine".