190990 has 16 divisors (see below), whose sum is σ = 349920. Its totient is φ = 75040.

The previous prime is 190979. The next prime is 190997. The reversal of 190990 is 99091.

190990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 576 + ... + 844.

It is an arithmetic number, because the mean of its divisors is an integer number (21870).

2¹⁹⁰⁹⁹⁰ is an apocalyptic number.

190990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

190990 is a deficient number, since it is larger than the sum of its proper divisors (158930).

190990 is a wasteful number, since it uses less digits than its factorization.

190990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 347.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 190990 is about 437.0240267994. The cubic root of 190990 is about 57.5886471324.

The spelling of 190990 in words is "one hundred ninety thousand, nine hundred ninety".