99983191 has 16 divisors (see below), whose sum is σ = 125768448. Its totient is φ = 77212800.

The previous prime is 99983189. The next prime is 99983197. The reversal of 99983191 is 19138999.

It is not a de Polignac number, because 99983191 - 2¹ = 99983189 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 (99983197) 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, 2956 + ... + 14446.

It is an arithmetic number, because the mean of its divisors is an integer number (7860528).

Almost surely, 2^99983191 is an apocalyptic number.

99983191 is a deficient number, since it is larger than the sum of its proper divisors (25785257).

99983191 is a wasteful number, since it uses less digits than its factorization.

99983191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11622.

The product of its digits is 157464, while the sum is 49.

The square root of 99983191 is about 9999.1595146792. The cubic root of 99983191 is about 464.1328750817.

The spelling of 99983191 in words is "ninety-nine million, nine hundred eighty-three thousand, one hundred ninety-one".