9999010001 has 4 divisors (see below), whose sum is σ = 10096087872. Its totient is φ = 9901932132.

The previous prime is 9999009997. The next prime is 9999010057. The reversal of 9999010001 is 1000109999.

It is a happy number.

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 9999010001 - 2² = 9999009997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9999013001) 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, 48538781 + ... + 48538986.

It is an arithmetic number, because the mean of its divisors is an integer number (2524021968).

Almost surely, 2^9999010001 is an apocalyptic number.

It is an amenable number.

9999010001 is a deficient number, since it is larger than the sum of its proper divisors (97077871).

9999010001 is a wasteful number, since it uses less digits than its factorization.

9999010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97077870.

The product of its (nonzero) digits is 6561, while the sum is 38.

The square root of 9999010001 is about 99995.0498824817. The cubic root of 9999010001 is about 2154.3635914126.

The spelling of 9999010001 in words is "nine billion, nine hundred ninety-nine million, ten thousand, one".