85273439 has 2 divisors, whose sum is σ = 85273440. Its totient is φ = 85273438.

The previous prime is 85273403. The next prime is 85273457. The reversal of 85273439 is 93437258.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 85273439 - 2²⁴ = 68496223 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85273396 and 85273405.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85273459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42636719 + 42636720.

It is an arithmetic number, because the mean of its divisors is an integer number (42636720).

Almost surely, 2^85273439 is an apocalyptic number.

85273439 is a deficient number, since it is larger than the sum of its proper divisors (1).

85273439 is an equidigital number, since it uses as much as digits as its factorization.

85273439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 41.

The square root of 85273439 is about 9234.3618620888. The cubic root of 85273439 is about 440.1539389051.

The spelling of 85273439 in words is "eighty-five million, two hundred seventy-three thousand, four hundred thirty-nine".