109800789 has 32 divisors (see below), whose sum is σ = 174182400. Its totient is φ = 60220992.

The previous prime is 109800787. The next prime is 109800797. The reversal of 109800789 is 987008901.

It is not a de Polignac number, because 109800789 - 2¹ = 109800787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 109800789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109800787) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 51262 + ... + 53360.

It is an arithmetic number, because the mean of its divisors is an integer number (5443200).

Almost surely, 2^109800789 is an apocalyptic number.

It is an amenable number.

109800789 is a deficient number, since it is larger than the sum of its proper divisors (64381611).

109800789 is a wasteful number, since it uses less digits than its factorization.

109800789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2209.

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 109800789 is about 10478.5871662166. The cubic root of 109800789 is about 478.8525674255.

The spelling of 109800789 in words is "one hundred nine million, eight hundred thousand, seven hundred eighty-nine".