109485809 has 4 divisors (see below), whose sum is σ = 115248240. Its totient is φ = 103723380.

The previous prime is 109485799. The next prime is 109485821. The reversal of 109485809 is 908584901.

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 109485809 - 2⁴ = 109485793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 109485809.

It is not an unprimeable number, because it can be changed into a prime (109485829) 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, 2881187 + ... + 2881224.

It is an arithmetic number, because the mean of its divisors is an integer number (28812060).

Almost surely, 2^109485809 is an apocalyptic number.

109485809 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

109485809 is a deficient number, since it is larger than the sum of its proper divisors (5762431).

109485809 is an equidigital number, since it uses as much as digits as its factorization.

109485809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5762430.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 109485809 is about 10463.5466740489. The cubic root of 109485809 is about 478.3942421302.

The spelling of 109485809 in words is "one hundred nine million, four hundred eighty-five thousand, eight hundred nine".