1109457289 has 4 divisors (see below), whose sum is σ = 1125083520. Its totient is φ = 1093831060.

The previous prime is 1109457287. The next prime is 1109457317. The reversal of 1109457289 is 9827549011.

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 not a de Polignac number, because 1109457289 - 2¹ = 1109457287 is a prime.

It is a super-2 number, since 2×1109457289² = 2461790952230459042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1109457287) 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, 7813009 + ... + 7813150.

It is an arithmetic number, because the mean of its divisors is an integer number (281270880).

Almost surely, 2^1109457289 is an apocalyptic number.

It is an amenable number.

1109457289 is a deficient number, since it is larger than the sum of its proper divisors (15626231).

1109457289 is an equidigital number, since it uses as much as digits as its factorization.

1109457289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15626230.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 1109457289 is about 33308.5167637348. The cubic root of 1109457289 is about 1035.2300324977.

The spelling of 1109457289 in words is "one billion, one hundred nine million, four hundred fifty-seven thousand, two hundred eighty-nine".