99191109403 has 4 divisors (see below), whose sum is σ = 99194077080. Its totient is φ = 99188141728.

The previous prime is 99191109389. The next prime is 99191109461. The reversal of 99191109403 is 30490119199.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99191109403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99191149403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1433125 + ... + 1500742.

It is an arithmetic number, because the mean of its divisors is an integer number (24798519270).

Almost surely, 2^99191109403 is an apocalyptic number.

99191109403 is a deficient number, since it is larger than the sum of its proper divisors (2967677).

99191109403 is a wasteful number, since it uses less digits than its factorization.

99191109403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2967676.

The product of its (nonzero) digits is 78732, while the sum is 46.

The spelling of 99191109403 in words is "ninety-nine billion, one hundred ninety-one million, one hundred nine thousand, four hundred three".