109650409 has 4 divisors (see below), whose sum is σ = 119618640. Its totient is φ = 99682180.

The previous prime is 109650383. The next prime is 109650419. The reversal of 109650409 is 904056901.

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 a de Polignac number, because none of the positive numbers 2^k-109650409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (109650419) 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, 4984099 + ... + 4984120.

It is an arithmetic number, because the mean of its divisors is an integer number (29904660).

Almost surely, 2^109650409 is an apocalyptic number.

It is an amenable number.

109650409 is a deficient number, since it is larger than the sum of its proper divisors (9968231).

109650409 is an equidigital number, since it uses as much as digits as its factorization.

109650409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9968230.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 109650409 is about 10471.4091219854. The cubic root of 109650409 is about 478.6338599858.

The spelling of 109650409 in words is "one hundred nine million, six hundred fifty thousand, four hundred nine".