85323149 has 2 divisors, whose sum is σ = 85323150. Its totient is φ = 85323148.

The previous prime is 85323113. The next prime is 85323151. The reversal of 85323149 is 94132358.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59567524 + 25755625 = 7718^2 + 5075^2 .

It is a cyclic number.

It is not a de Polignac number, because 85323149 - 2²⁰ = 84274573 is a prime.

Together with 85323151, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (85323179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42661574 + 42661575.

It is an arithmetic number, because the mean of its divisors is an integer number (42661575).

Almost surely, 2^85323149 is an apocalyptic number.

It is an amenable number.

85323149 is a deficient number, since it is larger than the sum of its proper divisors (1).

85323149 is an equidigital number, since it uses as much as digits as its factorization.

85323149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 35.

The square root of 85323149 is about 9237.0530473739. The cubic root of 85323149 is about 440.2394512768.

The spelling of 85323149 in words is "eighty-five million, three hundred twenty-three thousand, one hundred forty-nine".