190793989 has 2 divisors, whose sum is σ = 190793990. Its totient is φ = 190793988.

The previous prime is 190793971. The next prime is 190794047. The reversal of 190793989 is 989397091.

190793989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 164096100 + 26697889 = 12810^2 + 5167^2 .

It is a cyclic number.

It is not a de Polignac number, because 190793989 - 2⁷ = 190793861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (190793959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95396994 + 95396995.

It is an arithmetic number, because the mean of its divisors is an integer number (95396995).

Almost surely, 2^190793989 is an apocalyptic number.

It is an amenable number.

190793989 is a deficient number, since it is larger than the sum of its proper divisors (1).

190793989 is an equidigital number, since it uses as much as digits as its factorization.

190793989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1102248, while the sum is 55.

The square root of 190793989 is about 13812.8197338559. The cubic root of 190793989 is about 575.6893951748.

The spelling of 190793989 in words is "one hundred ninety million, seven hundred ninety-three thousand, nine hundred eighty-nine".