8421862401 has 6 divisors (see below), whose sum is σ = 12164912370. Its totient is φ = 5614574928.

The previous prime is 8421862381. The next prime is 8421862403. The reversal of 8421862401 is 1042681248.

8421862401 is a `hidden beast` number, since 8 + 4 + 21 + 8 + 624 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 5402250000 + 3019612401 = 73500^2 + 54951^2 .

It is not a de Polignac number, because 8421862401 - 2¹¹ = 8421860353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8421862403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 467881236 + ... + 467881253.

It is an arithmetic number, because the mean of its divisors is an integer number (2027485395).

Almost surely, 2^8421862401 is an apocalyptic number.

It is an amenable number.

8421862401 is a deficient number, since it is larger than the sum of its proper divisors (3743049969).

8421862401 is a wasteful number, since it uses less digits than its factorization.

8421862401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 935762495 (or 935762492 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 8421862401 is about 91770.7055710045. The cubic root of 8421862401 is about 2034.5547465438.

The spelling of 8421862401 in words is "eight billion, four hundred twenty-one million, eight hundred sixty-two thousand, four hundred one".