190789 has 4 divisors (see below), whose sum is σ = 192780. Its totient is φ = 188800.

The previous prime is 190787. The next prime is 190793. The reversal of 190789 is 987091.

190789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 146689 + 44100 = 383^2 + 210^2 .

It is a cyclic number.

It is not a de Polignac number, because 190789 - 2¹ = 190787 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 (190783) 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, 844 + ... + 1045.

It is an arithmetic number, because the mean of its divisors is an integer number (48195).

2¹⁹⁰⁷⁸⁹ is an apocalyptic number.

It is an amenable number.

190789 is a deficient number, since it is larger than the sum of its proper divisors (1991).

190789 is a wasteful number, since it uses less digits than its factorization.

190789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1990.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 190789 is about 436.7940017903. The cubic root of 190789 is about 57.5684377303.

It can be divided in two parts, 190 and 789, that added together give a palindrome (979).

The spelling of 190789 in words is "one hundred ninety thousand, seven hundred eighty-nine".