8400168404 has 6 divisors (see below), whose sum is σ = 14700294714. Its totient is φ = 4200084200.

The previous prime is 8400168397. The next prime is 8400168409. The reversal of 8400168404 is 4048610048.

It can be written as a sum of positive squares in only one way, i.e., 4587352900 + 3812815504 = 67730^2 + 61748^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8400168409) 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 as a sum of consecutive naturals, namely, 1050021047 + ... + 1050021054.

It is an arithmetic number, because the mean of its divisors is an integer number (2450049119).

Almost surely, 2^8400168404 is an apocalyptic number.

It is an amenable number.

8400168404 is a deficient number, since it is larger than the sum of its proper divisors (6300126310).

8400168404 is a wasteful number, since it uses less digits than its factorization.

8400168404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2100042105 (or 2100042103 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 8400168404 is about 91652.4326136519. The cubic root of 8400168404 is about 2032.8062980796.

The spelling of 8400168404 in words is "eight billion, four hundred million, one hundred sixty-eight thousand, four hundred four".