109779047 has 8 divisors (see below), whose sum is σ = 132842016. Its totient is φ = 88561152.

The previous prime is 109779041. The next prime is 109779049. The reversal of 109779047 is 740977901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109779047 - 2¹⁰ = 109778023 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109778989 and 109779007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109779041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 461138 + ... + 461375.

It is an arithmetic number, because the mean of its divisors is an integer number (16605252).

Almost surely, 2^109779047 is an apocalyptic number.

109779047 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

109779047 is a deficient number, since it is larger than the sum of its proper divisors (23062969).

109779047 is an equidigital number, since it uses as much as digits as its factorization.

109779047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 922537.

The product of its (nonzero) digits is 111132, while the sum is 44.

The square root of 109779047 is about 10477.5496658331. The cubic root of 109779047 is about 478.8209589709.

The spelling of 109779047 in words is "one hundred nine million, seven hundred seventy-nine thousand, forty-seven".