9999901001 has 8 divisors (see below), whose sum is σ = 10529085600. Its totient is φ = 9471003840.

The previous prime is 9999900961. The next prime is 9999901013. The reversal of 9999901001 is 1001099999.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9999901001 is a prime.

It is not an unprimeable number, because it can be changed into a prime (9999901081) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1490 + ... + 141428.

It is an arithmetic number, because the mean of its divisors is an integer number (1316135700).

Almost surely, 2^9999901001 is an apocalyptic number.

It is an amenable number.

9999901001 is a deficient number, since it is larger than the sum of its proper divisors (529184599).

9999901001 is a wasteful number, since it uses less digits than its factorization.

9999901001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143719.

The product of its (nonzero) digits is 59049, while the sum is 47.

The square root of 9999901001 is about 99999.5050037749. The cubic root of 9999901001 is about 2154.4275804458.

The spelling of 9999901001 in words is "nine billion, nine hundred ninety-nine million, nine hundred one thousand, one".