8400003 has 4 divisors (see below), whose sum is σ = 11200008. Its totient is φ = 5600000.

The previous prime is 8399987. The next prime is 8400011. The reversal of 8400003 is 3000048.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8400003 - 2⁴ = 8399987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8400043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1399998 + ... + 1400003.

It is an arithmetic number, because the mean of its divisors is an integer number (2800002).

Almost surely, 2^8400003 is an apocalyptic number.

8400003 is a deficient number, since it is larger than the sum of its proper divisors (2800005).

8400003 is a wasteful number, since it uses less digits than its factorization.

8400003 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2800004.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 8400003 is about 2898.2758667870. The cubic root of 8400003 is about 203.2792955629.

The spelling of 8400003 in words is "eight million, four hundred thousand, three".