99897279899 has 8 divisors (see below), whose sum is σ = 100703196000. Its totient is φ = 99093511296.

The previous prime is 99897279863. The next prime is 99897279917.

It is a happy number.

99897279899 is nontrivially palindromic in base 10.

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-99897279899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99897279899.

It is not an unprimeable number, because it can be changed into a prime (99897279829) 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 7 ways as a sum of consecutive naturals, for example, 443399 + ... + 629600.

It is an arithmetic number, because the mean of its divisors is an integer number (12587899500).

Almost surely, 2^99897279899 is an apocalyptic number.

99897279899 is a deficient number, since it is larger than the sum of its proper divisors (805916101).

99897279899 is a wasteful number, since it uses less digits than its factorization.

99897279899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073749.

The product of its digits is 3333197952, while the sum is 86.

The spelling of 99897279899 in words is "ninety-nine billion, eight hundred ninety-seven million, two hundred seventy-nine thousand, eight hundred ninety-nine".