85272329 has 2 divisors, whose sum is σ = 85272330. Its totient is φ = 85272328.

The previous prime is 85272233. The next prime is 85272331. The reversal of 85272329 is 92327258.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 69272329 + 16000000 = 8323^2 + 4000^2 .

It is a cyclic number.

It is not a de Polignac number, because 85272329 - 2⁸ = 85272073 is a prime.

Together with 85272331, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 85272292 and 85272301.

It is not a weakly prime, because it can be changed into another prime (85272359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42636164 + 42636165.

It is an arithmetic number, because the mean of its divisors is an integer number (42636165).

Almost surely, 2^85272329 is an apocalyptic number.

It is an amenable number.

85272329 is a deficient number, since it is larger than the sum of its proper divisors (1).

85272329 is an equidigital number, since it uses as much as digits as its factorization.

85272329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 38.

The square root of 85272329 is about 9234.3017602849. The cubic root of 85272329 is about 440.1520290763.

The spelling of 85272329 in words is "eighty-five million, two hundred seventy-two thousand, three hundred twenty-nine".