109001809 has 8 divisors (see below), whose sum is σ = 124642880. Its totient is φ = 93378096.

The previous prime is 109001779. The next prime is 109001813. The reversal of 109001809 is 908100901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 109001809 - 2⁷ = 109001681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109001869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14707 + ... + 20839.

It is an arithmetic number, because the mean of its divisors is an integer number (15580360).

Almost surely, 2^109001809 is an apocalyptic number.

It is an amenable number.

109001809 is a deficient number, since it is larger than the sum of its proper divisors (15641071).

109001809 is an equidigital number, since it uses as much as digits as its factorization.

109001809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8679.

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 109001809 is about 10440.3931439386. The cubic root of 109001809 is about 477.6882606983.

The spelling of 109001809 in words is "one hundred nine million, one thousand, eight hundred nine".