194990 has 32 divisors (see below), whose sum is σ = 393984. Its totient is φ = 69120.

The previous prime is 194989. The next prime is 195023. The reversal of 194990 is 99491.

194990 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×194990² = 76042200200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5252 + ... + 5288.

It is an arithmetic number, because the mean of its divisors is an integer number (12312).

2¹⁹⁴⁹⁹⁰ is an apocalyptic number.

194990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194990 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194990 is a wasteful number, since it uses less digits than its factorization.

194990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92.

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 194990 is about 441.5767204009. The cubic root of 194990 is about 57.9879086963.

The spelling of 194990 in words is "one hundred ninety-four thousand, nine hundred ninety".