9959801001 has 16 divisors (see below), whose sum is σ = 13318278720. Its totient is φ = 6620621760.

The previous prime is 9959800967. The next prime is 9959801003. The reversal of 9959801001 is 1001089599.

It is not a de Polignac number, because 9959801001 - 2⁶ = 9959800937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9959801003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2106426 + ... + 2111148.

It is an arithmetic number, because the mean of its divisors is an integer number (832392420).

Almost surely, 2^9959801001 is an apocalyptic number.

It is an amenable number.

9959801001 is a deficient number, since it is larger than the sum of its proper divisors (3358477719).

9959801001 is a wasteful number, since it uses less digits than its factorization.

9959801001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6616.

The product of its (nonzero) digits is 29160, while the sum is 42.

The square root of 9959801001 is about 99798.8026030373. The cubic root of 9959801001 is about 2151.5439424610.

The spelling of 9959801001 in words is "nine billion, nine hundred fifty-nine million, eight hundred one thousand, one".