1000008001 has 4 divisors (see below), whose sum is σ = 1000404400. Its totient is φ = 999611604.

The previous prime is 1000007941. The next prime is 1000008041. The reversal of 1000008001 is 1008000001.

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 1000008001 - 2⁷ = 1000007873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000008041) 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, 194391 + ... + 199468.

It is an arithmetic number, because the mean of its divisors is an integer number (250101100).

Almost surely, 2^1000008001 is an apocalyptic number.

It is an amenable number.

1000008001 is a deficient number, since it is larger than the sum of its proper divisors (396399).

1000008001 is an equidigital number, since it uses as much as digits as its factorization.

1000008001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 396398.

The product of its (nonzero) digits is 8, while the sum is 10.

The square root of 1000008001 is about 31622.9031083485. The cubic root of 1000008001 is about 1000.0026669929.

Adding to 1000008001 its reverse (1008000001), we get a palindrome (2008008002).

The spelling of 1000008001 in words is "one billion, eight thousand, one".