109747747 has 8 divisors (see below), whose sum is σ = 111024144. Its totient is φ = 108476928.

The previous prime is 109747741. The next prime is 109747763. The reversal of 109747747 is 747747901.

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 a de Polignac number, because none of the positive numbers 2^k-109747747 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109747697 and 109747706.

It is not an unprimeable number, because it can be changed into a prime (109747741) 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, 47808 + ... + 50050.

It is an arithmetic number, because the mean of its divisors is an integer number (13878018).

Almost surely, 2^109747747 is an apocalyptic number.

109747747 is a deficient number, since it is larger than the sum of its proper divisors (1276397).

109747747 is a wasteful number, since it uses less digits than its factorization.

109747747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2789.

The product of its (nonzero) digits is 345744, while the sum is 46.

The square root of 109747747 is about 10476.0558895035. The cubic root of 109747747 is about 478.7754477948.

It can be divided in two parts, 10974 and 7747, that added together give a triangular number (18721 = T₁₉₃).

The spelling of 109747747 in words is "one hundred nine million, seven hundred forty-seven thousand, seven hundred forty-seven".