1109498879 has 4 divisors (see below), whose sum is σ = 1109578176. Its totient is φ = 1109419584.

The previous prime is 1109498869. The next prime is 1109498881. The reversal of 1109498879 is 9788949011.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 9788949011 = 43 ⋅227649977.

It is a cyclic number.

It is not a de Polignac number, because 1109498879 - 2¹⁶ = 1109433343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1109498869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12434 + ... + 48719.

It is an arithmetic number, because the mean of its divisors is an integer number (277394544).

Almost surely, 2^1109498879 is an apocalyptic number.

1109498879 is a deficient number, since it is larger than the sum of its proper divisors (79297).

1109498879 is an equidigital number, since it uses as much as digits as its factorization.

1109498879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79296.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The square root of 1109498879 is about 33309.1410726845. The cubic root of 1109498879 is about 1035.2429681553.

The spelling of 1109498879 in words is "one billion, one hundred nine million, four hundred ninety-eight thousand, eight hundred seventy-nine".