109440009 has 24 divisors (see below), whose sum is σ = 181014912. Its totient is φ = 62415360.

The previous prime is 109439989. The next prime is 109440041. The reversal of 109440009 is 900044901.

It is not a de Polignac number, because 109440009 - 2⁵ = 109439977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (109440059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38377 + ... + 41129.

It is an arithmetic number, because the mean of its divisors is an integer number (7542288).

Almost surely, 2^109440009 is an apocalyptic number.

It is an amenable number.

109440009 is a deficient number, since it is larger than the sum of its proper divisors (71574903).

109440009 is a wasteful number, since it uses less digits than its factorization.

109440009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397 (or 3394 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 109440009 is about 10461.3578946521. The cubic root of 109440009 is about 478.3275256842.

The spelling of 109440009 in words is "one hundred nine million, four hundred forty thousand, nine".