534823821 has 12 divisors (see below), whose sum is σ = 882883872. Its totient is φ = 305613576.

The previous prime is 534823781. The next prime is 534823831. The reversal of 534823821 is 128328435.

It is not a de Polignac number, because 534823821 - 2⁹ = 534823309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (534823831) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4244571 + ... + 4244696.

It is an arithmetic number, because the mean of its divisors is an integer number (73573656).

Almost surely, 2^534823821 is an apocalyptic number.

It is an amenable number.

534823821 is a deficient number, since it is larger than the sum of its proper divisors (348060051).

534823821 is a wasteful number, since it uses less digits than its factorization.

534823821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8489280 (or 8489277 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 534823821 is about 23126.2582576603. The cubic root of 534823821 is about 811.7150173420.

The spelling of 534823821 in words is "five hundred thirty-four million, eight hundred twenty-three thousand, eight hundred twenty-one".