412108821 has 12 divisors (see below), whose sum is σ = 615795180. Its totient is φ = 265265280.

The previous prime is 412108817. The next prime is 412108889. The reversal of 412108821 is 128801214.

It can be written as a sum of positive squares in 2 ways, for example, as 94770225 + 317338596 = 9735^2 + 17814^2 .

It is not a de Polignac number, because 412108821 - 2² = 412108817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412108811) 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, 789220 + ... + 789741.

It is an arithmetic number, because the mean of its divisors is an integer number (51316265).

Almost surely, 2^412108821 is an apocalyptic number.

It is an amenable number.

412108821 is a deficient number, since it is larger than the sum of its proper divisors (203686359).

412108821 is a wasteful number, since it uses less digits than its factorization.

412108821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1578996 (or 1578993 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 412108821 is about 20300.4635661356. The cubic root of 412108821 is about 744.1673931799.

The spelling of 412108821 in words is "four hundred twelve million, one hundred eight thousand, eight hundred twenty-one".