895224821 has 4 divisors (see below), whose sum is σ = 895287852. Its totient is φ = 895161792.

The previous prime is 895224779. The next prime is 895224823. The reversal of 895224821 is 128422598.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 128422598 = 2 ⋅64211299.

It can be written as a sum of positive squares in 2 ways, for example, as 434263921 + 460960900 = 20839^2 + 21470^2 .

It is a cyclic number.

It is not a de Polignac number, because 895224821 - 2¹⁴ = 895208437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (895224823) 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, 911 + ... + 42323.

It is an arithmetic number, because the mean of its divisors is an integer number (223821963).

Almost surely, 2^895224821 is an apocalyptic number.

It is an amenable number.

895224821 is a deficient number, since it is larger than the sum of its proper divisors (63031).

895224821 is a wasteful number, since it uses less digits than its factorization.

895224821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63030.

The product of its digits is 92160, while the sum is 41.

The square root of 895224821 is about 29920.3078359832. The cubic root of 895224821 is about 963.7788058611.

The spelling of 895224821 in words is "eight hundred ninety-five million, two hundred twenty-four thousand, eight hundred twenty-one".