99817000399 has 4 divisors (see below), whose sum is σ = 103258965960. Its totient is φ = 96375034840.

The previous prime is 99817000343. The next prime is 99817000427. The reversal of 99817000399 is 99300071899.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 99817000399 - 2²⁷ = 99682782671 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99817000799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1720982737 + ... + 1720982794.

It is an arithmetic number, because the mean of its divisors is an integer number (25814741490).

Almost surely, 2^99817000399 is an apocalyptic number.

99817000399 is a deficient number, since it is larger than the sum of its proper divisors (3441965561).

99817000399 is a wasteful number, since it uses less digits than its factorization.

99817000399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3441965560.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The spelling of 99817000399 in words is "ninety-nine billion, eight hundred seventeen million, three hundred ninety-nine", and thus it is an aban number.