85824219 has 8 divisors (see below), whose sum is σ = 123234832. Its totient is φ = 52814880.

The previous prime is 85824217. The next prime is 85824229. The reversal of 85824219 is 91242858.

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

It is not a de Polignac number, because 85824219 - 2¹ = 85824217 is a prime.

It is a super-2 number, since 2×85824219² = 14731593133919922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 2200621 = 85824219 / (8 + 5 + 8 + 2 + 4 + 2 + 1 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85824217) 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, 1100272 + ... + 1100349.

It is an arithmetic number, because the mean of its divisors is an integer number (15404354).

Almost surely, 2^85824219 is an apocalyptic number.

85824219 is a deficient number, since it is larger than the sum of its proper divisors (37410613).

85824219 is a wasteful number, since it uses less digits than its factorization.

85824219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2200637.

The product of its digits is 46080, while the sum is 39.

The square root of 85824219 is about 9264.1361712790. The cubic root of 85824219 is about 441.0995553746.

The spelling of 85824219 in words is "eighty-five million, eight hundred twenty-four thousand, two hundred nineteen".