109199617 has 4 divisors (see below), whose sum is σ = 112150996. Its totient is φ = 106248240.

The previous prime is 109199611. The next prime is 109199621. The reversal of 109199617 is 716991901.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 60980481 + 48219136 = 7809^2 + 6944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109199617 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109199611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1475634 + ... + 1475707.

It is an arithmetic number, because the mean of its divisors is an integer number (28037749).

Almost surely, 2^109199617 is an apocalyptic number.

It is an amenable number.

109199617 is a deficient number, since it is larger than the sum of its proper divisors (2951379).

109199617 is an equidigital number, since it uses as much as digits as its factorization.

109199617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2951378.

The product of its (nonzero) digits is 30618, while the sum is 43.

The square root of 109199617 is about 10449.8620565058. The cubic root of 109199617 is about 477.9770432419.

The spelling of 109199617 in words is "one hundred nine million, one hundred ninety-nine thousand, six hundred seventeen".