85441569 has 8 divisors (see below), whose sum is σ = 117850560. Its totient is φ = 54996816.

The previous prime is 85441553. The next prime is 85441571. The reversal of 85441569 is 96514458.

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

It is not a de Polignac number, because 85441569 - 2⁴ = 85441553 is a prime.

It is a super-2 number, since 2×85441569² = 14600523426363522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85441569.

It is not an unprimeable number, because it can be changed into a prime (85441519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 490957 + ... + 491130.

It is an arithmetic number, because the mean of its divisors is an integer number (14731320).

Almost surely, 2^85441569 is an apocalyptic number.

It is an amenable number.

85441569 is a deficient number, since it is larger than the sum of its proper divisors (32408991).

85441569 is a wasteful number, since it uses less digits than its factorization.

85441569 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982119.

The product of its digits is 172800, while the sum is 42.

The square root of 85441569 is about 9243.4608778314. The cubic root of 85441569 is about 440.4430265725.

The spelling of 85441569 in words is "eighty-five million, four hundred forty-one thousand, five hundred sixty-nine".