463219821 has 12 divisors (see below), whose sum is σ = 678261948. Its totient is φ = 304582464.

The previous prime is 463219819. The next prime is 463219853. The reversal of 463219821 is 128912364.

463219821 is a `hidden beast` number, since 4 + 632 + 19 + 8 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 385533225 + 77686596 = 19635^2 + 8814^2 .

It is not a de Polignac number, because 463219821 - 2¹ = 463219819 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (463211821) 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, 351870 + ... + 353183.

It is an arithmetic number, because the mean of its divisors is an integer number (56521829).

Almost surely, 2^463219821 is an apocalyptic number.

It is an amenable number.

463219821 is a deficient number, since it is larger than the sum of its proper divisors (215042127).

463219821 is a wasteful number, since it uses less digits than its factorization.

463219821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705132 (or 705129 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 463219821 is about 21522.5421593268. The cubic root of 463219821 is about 773.7411800126.

The spelling of 463219821 in words is "four hundred sixty-three million, two hundred nineteen thousand, eight hundred twenty-one".