99191603 has 4 divisors (see below), whose sum is σ = 113361840. Its totient is φ = 85021368.

The previous prime is 99191593. The next prime is 99191623. The reversal of 99191603 is 30619199.

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 99191603 - 2⁶ = 99191539 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99191623) 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, 7085108 + ... + 7085121.

It is an arithmetic number, because the mean of its divisors is an integer number (28340460).

Almost surely, 2^99191603 is an apocalyptic number.

99191603 is a deficient number, since it is larger than the sum of its proper divisors (14170237).

99191603 is a wasteful number, since it uses less digits than its factorization.

99191603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14170236.

The product of its (nonzero) digits is 13122, while the sum is 38.

The square root of 99191603 is about 9959.4981299260. The cubic root of 99191603 is about 462.9047489746.

The spelling of 99191603 in words is "ninety-nine million, one hundred ninety-one thousand, six hundred three".