8400001 has 4 divisors (see below), whose sum is σ = 8413632. Its totient is φ = 8386372.

The previous prime is 8399987. The next prime is 8400011. The reversal of 8400001 is 1000048.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 8400001 - 2⁷ = 8399873 is a prime.

It is a Duffinian number.

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 in 3 ways as a sum of consecutive naturals, for example, 5845 + ... + 7138.

It is an arithmetic number, because the mean of its divisors is an integer number (2103408).

Almost surely, 2^8400001 is an apocalyptic number.

It is an amenable number.

8400001 is a deficient number, since it is larger than the sum of its proper divisors (13631).

8400001 is a wasteful number, since it uses less digits than its factorization.

8400001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13630.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 8400001 is about 2898.2755217543. The cubic root of 8400001 is about 203.2792794296.

Adding to 8400001 its reverse (1000048), we get a palindrome (9400049).

The spelling of 8400001 in words is "eight million, four hundred thousand, one".