99109193 has 2 divisors, whose sum is σ = 99109194. Its totient is φ = 99109192.

The previous prime is 99109189. The next prime is 99109291. The reversal of 99109193 is 39190199.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 91336249 + 7772944 = 9557^2 + 2788^2 .

It is a cyclic number.

It is not a de Polignac number, because 99109193 - 2² = 99109189 is a prime.

It is a super-2 number, since 2×99109193² = 19645264274222498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99109193.

It is not a weakly prime, because it can be changed into another prime (99109103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49554596 + 49554597.

It is an arithmetic number, because the mean of its divisors is an integer number (49554597).

Almost surely, 2^99109193 is an apocalyptic number.

It is an amenable number.

99109193 is a deficient number, since it is larger than the sum of its proper divisors (1).

99109193 is an equidigital number, since it uses as much as digits as its factorization.

99109193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 99109193 is about 9955.3600135806. The cubic root of 99109193 is about 462.7765171863.

The spelling of 99109193 in words is "ninety-nine million, one hundred nine thousand, one hundred ninety-three".