109799647 has 4 divisors (see below), whose sum is σ = 109864456. Its totient is φ = 109734840.

The previous prime is 109799629. The next prime is 109799659. The reversal of 109799647 is 746997901.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 109799647 - 2¹⁹ = 109275359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 109799594 and 109799603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109799687) 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, 29793 + ... + 33274.

It is an arithmetic number, because the mean of its divisors is an integer number (27466114).

Almost surely, 2^109799647 is an apocalyptic number.

109799647 is a deficient number, since it is larger than the sum of its proper divisors (64809).

109799647 is an equidigital number, since it uses as much as digits as its factorization.

109799647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64808.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 109799647 is about 10478.5326739959. The cubic root of 109799647 is about 478.8509072932.

The spelling of 109799647 in words is "one hundred nine million, seven hundred ninety-nine thousand, six hundred forty-seven".