8400004 has 6 divisors (see below), whose sum is σ = 14700014. Its totient is φ = 4200000.

The previous prime is 8399987. The next prime is 8400011. The reversal of 8400004 is 4000048.

It can be written as a sum of positive squares in only one way, i.e., 8398404 + 1600 = 2898^2 + 40^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1049997 + ... + 1050004.

Almost surely, 2^8400004 is an apocalyptic number.

It is an amenable number.

8400004 is a deficient number, since it is larger than the sum of its proper divisors (6300010).

8400004 is a wasteful number, since it uses less digits than its factorization.

8400004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100005 (or 2100003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 8400004 is about 2898.2760393034. The cubic root of 8400004 is about 203.2793036295.

The spelling of 8400004 in words is "eight million, four hundred thousand, four".