99209782799 has 4 divisors (see below), whose sum is σ = 99212286264. Its totient is φ = 99207279336.

The previous prime is 99209782757. The next prime is 99209782811. The reversal of 99209782799 is 99728790299.

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 99209782799 - 2¹⁶ = 99209717263 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 (99209781799) 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 3 ways as a sum of consecutive naturals, for example, 1191317 + ... + 1271870.

It is an arithmetic number, because the mean of its divisors is an integer number (24803071566).

Almost surely, 2^99209782799 is an apocalyptic number.

99209782799 is a deficient number, since it is larger than the sum of its proper divisors (2503465).

99209782799 is a wasteful number, since it uses less digits than its factorization.

99209782799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2503464.

The product of its (nonzero) digits is 92588832, while the sum is 71.

The spelling of 99209782799 in words is "ninety-nine billion, two hundred nine million, seven hundred eighty-two thousand, seven hundred ninety-nine".