109690009 has 24 divisors (see below), whose sum is σ = 131047560. Its totient is φ = 91196160.

The previous prime is 109689991. The next prime is 109690039. The reversal of 109690009 is 900096901.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17472400 + 92217609 = 4180^2 + 9603^2 .

It is not a de Polignac number, because 109690009 - 2²¹ = 107592857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109690039) 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, 215247 + ... + 215755.

It is an arithmetic number, because the mean of its divisors is an integer number (5460315).

Almost surely, 2^109690009 is an apocalyptic number.

It is an amenable number.

109690009 is a deficient number, since it is larger than the sum of its proper divisors (21357551).

109690009 is a wasteful number, since it uses less digits than its factorization.

109690009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 670 counting only the distinct ones).

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 109690009 is about 10473.2998142897. The cubic root of 109690009 is about 478.6914722336.

The spelling of 109690009 in words is "one hundred nine million, six hundred ninety thousand, nine".