109494209 has 4 divisors (see below), whose sum is σ = 119448240. Its totient is φ = 99540180.

The previous prime is 109494199. The next prime is 109494223. The reversal of 109494209 is 902494901.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109494209 - 2¹² = 109490113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109494239) 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, 4976999 + ... + 4977020.

It is an arithmetic number, because the mean of its divisors is an integer number (29862060).

Almost surely, 2^109494209 is an apocalyptic number.

It is an amenable number.

109494209 is a deficient number, since it is larger than the sum of its proper divisors (9954031).

109494209 is an equidigital number, since it uses as much as digits as its factorization.

109494209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9954030.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 109494209 is about 10463.9480598864. The cubic root of 109494209 is about 478.4064763150.

The spelling of 109494209 in words is "one hundred nine million, four hundred ninety-four thousand, two hundred nine".