99450191 has 16 divisors (see below), whose sum is σ = 104889120. Its totient is φ = 94193280.

The previous prime is 99450181. The next prime is 99450203. The reversal of 99450191 is 19105499.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99450191 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 (99450121) 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 15 ways as a sum of consecutive naturals, for example, 313565 + ... + 313881.

It is an arithmetic number, because the mean of its divisors is an integer number (6555570).

Almost surely, 2^99450191 is an apocalyptic number.

99450191 is a deficient number, since it is larger than the sum of its proper divisors (5438929).

99450191 is a wasteful number, since it uses less digits than its factorization.

99450191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 554.

The product of its (nonzero) digits is 14580, while the sum is 38.

The square root of 99450191 is about 9972.4716595235. The cubic root of 99450191 is about 463.3066571372.

The spelling of 99450191 in words is "ninety-nine million, four hundred fifty thousand, one hundred ninety-one".