1109393009 has 4 divisors (see below), whose sum is σ = 1109469504. Its totient is φ = 1109316516.

The previous prime is 1109392997. The next prime is 1109393011. The reversal of 1109393009 is 9003939011.

It is a happy number.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1109393009 - 2⁴ = 1109392993 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1109393009.

It is not an unprimeable number, because it can be changed into a prime (1109393039) 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, 9077 + ... + 47970.

It is an arithmetic number, because the mean of its divisors is an integer number (277367376).

Almost surely, 2^1109393009 is an apocalyptic number.

It is an amenable number.

1109393009 is a deficient number, since it is larger than the sum of its proper divisors (76495).

1109393009 is an equidigital number, since it uses as much as digits as its factorization.

1109393009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76494.

The product of its (nonzero) digits is 6561, while the sum is 35.

The square root of 1109393009 is about 33307.5518313790. The cubic root of 1109393009 is about 1035.2100389770.

The spelling of 1109393009 in words is "one billion, one hundred nine million, three hundred ninety-three thousand, nine".