99997999001 has 16 divisors (see below), whose sum is σ = 111699302400. Its totient is φ = 89080147728.

The previous prime is 99997998983. The next prime is 99997999009. The reversal of 99997999001 is 10099979999.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 99997999001 - 2³⁰ = 98924257177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99997999009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1913441 + ... + 1965006.

It is an arithmetic number, because the mean of its divisors is an integer number (6981206400).

Almost surely, 2^99997999001 is an apocalyptic number.

It is an amenable number.

99997999001 is a deficient number, since it is larger than the sum of its proper divisors (11701303399).

99997999001 is a wasteful number, since it uses less digits than its factorization.

99997999001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3878548.

The product of its (nonzero) digits is 33480783, while the sum is 71.

The spelling of 99997999001 in words is "ninety-nine billion, nine hundred ninety-seven million, nine hundred ninety-nine thousand, one".