85211329 has 8 divisors (see below), whose sum is σ = 99456768. Its totient is φ = 71484000.

The previous prime is 85211311. The next prime is 85211341. The reversal of 85211329 is 92311258.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85211329 - 2¹⁹ = 84687041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85211329.

It is not an unprimeable number, because it can be changed into a prime (85212329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129172 + ... + 129829.

It is an arithmetic number, because the mean of its divisors is an integer number (12432096).

Almost surely, 2^85211329 is an apocalyptic number.

It is an amenable number.

85211329 is a deficient number, since it is larger than the sum of its proper divisors (14245439).

85211329 is a wasteful number, since it uses less digits than its factorization.

85211329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259055.

The product of its digits is 4320, while the sum is 31.

The square root of 85211329 is about 9230.9982667098. The cubic root of 85211329 is about 440.0470490322.

The spelling of 85211329 in words is "eighty-five million, two hundred eleven thousand, three hundred twenty-nine".