1109806679 has 4 divisors (see below), whose sum is σ = 1109906784. Its totient is φ = 1109706576.

The previous prime is 1109806673. The next prime is 1109806681. The reversal of 1109806679 is 9766089011.

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.

It is a cyclic number.

It is not a de Polignac number, because 1109806679 - 2¹² = 1109802583 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 (1109806673) 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, 31007 + ... + 56400.

It is an arithmetic number, because the mean of its divisors is an integer number (277476696).

Almost surely, 2^1109806679 is an apocalyptic number.

1109806679 is a deficient number, since it is larger than the sum of its proper divisors (100105).

1109806679 is an equidigital number, since it uses as much as digits as its factorization.

1109806679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100104.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 1109806679 is about 33313.7611055852. The cubic root of 1109806679 is about 1035.3386925493.

The spelling of 1109806679 in words is "one billion, one hundred nine million, eight hundred six thousand, six hundred seventy-nine".