85411439 has 2 divisors, whose sum is σ = 85411440. Its totient is φ = 85411438.

The previous prime is 85411433. The next prime is 85411481. The reversal of 85411439 is 93411458.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 85411439 - 2⁴ = 85411423 is a prime.

It is a super-2 number, since 2×85411439² = 14590227824101442, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 85411399 and 85411408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85411433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42705719 + 42705720.

It is an arithmetic number, because the mean of its divisors is an integer number (42705720).

Almost surely, 2^85411439 is an apocalyptic number.

85411439 is a deficient number, since it is larger than the sum of its proper divisors (1).

85411439 is an equidigital number, since it uses as much as digits as its factorization.

85411439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 35.

The square root of 85411439 is about 9241.8309333162. The cubic root of 85411439 is about 440.3912480734.

The spelling of 85411439 in words is "eighty-five million, four hundred eleven thousand, four hundred thirty-nine".