8400016 has 10 divisors (see below), whose sum is σ = 16275062. Its totient is φ = 4200000.

The previous prime is 8400011. The next prime is 8400019. The reversal of 8400016 is 6100048.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 1430416 = 2640^2 + 1196^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8399966 and 8400002.

It is not an unprimeable number, because it can be changed into a prime (8400011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 262485 + ... + 262516.

Almost surely, 2^8400016 is an apocalyptic number.

It is an amenable number.

8400016 is a deficient number, since it is larger than the sum of its proper divisors (7875046).

8400016 is a wasteful number, since it uses less digits than its factorization.

8400016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525009 (or 525003 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 8400016 is about 2898.2781094988. The cubic root of 8400016 is about 203.2794004291.

Subtracting from 8400016 its reverse (6100048), we obtain a cube (2299968 = 132³).

The spelling of 8400016 in words is "eight million, four hundred thousand, sixteen".