99439493499 has 12 divisors (see below), whose sum is σ = 144598818000. Its totient is φ = 65848075344.

The previous prime is 99439493477. The next prime is 99439493551.

99439493499 is a `hidden beast` number, since 9 + 9 + 43 + 9 + 4 + 93 + 499 = 666.

99439493499 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99439493499 - 2⁵ = 99439493467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99439493299) 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 11 ways as a sum of consecutive naturals, for example, 37075279 + ... + 37077960.

It is an arithmetic number, because the mean of its divisors is an integer number (12049901500).

Almost surely, 2^99439493499 is an apocalyptic number.

99439493499 is a deficient number, since it is larger than the sum of its proper divisors (45159324501).

99439493499 is a wasteful number, since it uses less digits than its factorization.

99439493499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74153394 (or 74153391 counting only the distinct ones).

The product of its digits is 306110016, while the sum is 72.

The spelling of 99439493499 in words is "ninety-nine billion, four hundred thirty-nine million, four hundred ninety-three thousand, four hundred ninety-nine".