869445285 has 8 divisors (see below), whose sum is σ = 1391112480. Its totient is φ = 463704144.

The previous prime is 869445281. The next prime is 869445289. The reversal of 869445285 is 582544968.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (869445281) and next prime (869445289).

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

It is not a de Polignac number, because 869445285 - 2² = 869445281 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (869445281) 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 7 ways as a sum of consecutive naturals, for example, 28981495 + ... + 28981524.

It is an arithmetic number, because the mean of its divisors is an integer number (173889060).

Almost surely, 2^869445285 is an apocalyptic number.

It is an amenable number.

869445285 is a deficient number, since it is larger than the sum of its proper divisors (521667195).

869445285 is a wasteful number, since it uses less digits than its factorization.

869445285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57963027.

The product of its digits is 2764800, while the sum is 51.

The square root of 869445285 is about 29486.3576082228. The cubic root of 869445285 is about 954.4373338226.

It can be divided in two parts, 86944 and 5285, that added together give a palindrome (92229).

The spelling of 869445285 in words is "eight hundred sixty-nine million, four hundred forty-five thousand, two hundred eighty-five".