190039 has 4 divisors (see below), whose sum is σ = 193320. Its totient is φ = 186760.

The previous prime is 190031. The next prime is 190051. The reversal of 190039 is 930091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 930091 = 641 ⋅1451.

It is a cyclic number.

It is not a de Polignac number, because 190039 - 2³ = 190031 is a prime.

It is a super-2 number, since 2×190039² = 72229643042, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1552 + ... + 1669.

It is an arithmetic number, because the mean of its divisors is an integer number (48330).

2¹⁹⁰⁰³⁹ is an apocalyptic number.

190039 is a deficient number, since it is larger than the sum of its proper divisors (3281).

190039 is an equidigital number, since it uses as much as digits as its factorization.

190039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3280.

The product of its (nonzero) digits is 243, while the sum is 22.

The square root of 190039 is about 435.9346281267. The cubic root of 190039 is about 57.4929039762.

The spelling of 190039 in words is "one hundred ninety thousand, thirty-nine".