85851229 has 4 divisors (see below), whose sum is σ = 85907584. Its totient is φ = 85794876.

The previous prime is 85851191. The next prime is 85851247. The reversal of 85851229 is 92215858.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85851229 - 2²³ = 77462621 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85851191 and 85851200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85851529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25827 + ... + 28960.

It is an arithmetic number, because the mean of its divisors is an integer number (21476896).

Almost surely, 2^85851229 is an apocalyptic number.

It is an amenable number.

85851229 is a deficient number, since it is larger than the sum of its proper divisors (56355).

85851229 is a wasteful number, since it uses less digits than its factorization.

85851229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56354.

The product of its digits is 57600, while the sum is 40.

The square root of 85851229 is about 9265.5938287840. The cubic root of 85851229 is about 441.1458237803.

The spelling of 85851229 in words is "eighty-five million, eight hundred fifty-one thousand, two hundred twenty-nine".