1109904069 has 4 divisors (see below), whose sum is σ = 1479872096. Its totient is φ = 739936044.

The previous prime is 1109904043. The next prime is 1109904073. The reversal of 1109904069 is 9604099011.

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 de Polignac number, because none of the positive numbers 2^k-1109904069 is a prime.

It is a super-2 number, since 2×1109904069² = 2463774084765513522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109904569) 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, 184984009 + ... + 184984014.

It is an arithmetic number, because the mean of its divisors is an integer number (369968024).

Almost surely, 2^1109904069 is an apocalyptic number.

It is an amenable number.

1109904069 is a deficient number, since it is larger than the sum of its proper divisors (369968027).

1109904069 is an equidigital number, since it uses as much as digits as its factorization.

1109904069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 369968026.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 1109904069 is about 33315.2227817855. Note that the first 3 decimals coincide. The cubic root of 1109904069 is about 1035.3689767084.

The spelling of 1109904069 in words is "one billion, one hundred nine million, nine hundred four thousand, sixty-nine".