418282821 has 12 divisors (see below), whose sum is σ = 659112480. Its totient is φ = 253504680.

The previous prime is 418282819. The next prime is 418282829. The reversal of 418282821 is 128282814.

It is not a de Polignac number, because 418282821 - 2¹ = 418282819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (418282829) 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 11 ways as a sum of consecutive naturals, for example, 2112441 + ... + 2112638.

It is an arithmetic number, because the mean of its divisors is an integer number (54926040).

Almost surely, 2^418282821 is an apocalyptic number.

It is an amenable number.

418282821 is a deficient number, since it is larger than the sum of its proper divisors (240829659).

418282821 is a wasteful number, since it uses less digits than its factorization.

418282821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4225096 (or 4225093 counting only the distinct ones).

The product of its digits is 16384, while the sum is 36.

The square root of 418282821 is about 20451.9637443449. The cubic root of 418282821 is about 747.8652307790.

The spelling of 418282821 in words is "four hundred eighteen million, two hundred eighty-two thousand, eight hundred twenty-one".