250039 has 4 divisors (see below), whose sum is σ = 254200. Its totient is φ = 245880.

The previous prime is 250037. The next prime is 250043. The reversal of 250039 is 930052.

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

It is a cyclic number.

It is not a de Polignac number, because 250039 - 2¹ = 250037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 249998 and 250025.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (250031) 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, 1989 + ... + 2110.

It is an arithmetic number, because the mean of its divisors is an integer number (63550).

250039 is a Friedman number, since it can be written as 500^2+39, using all its digits and the basic arithmetic operations.

2²⁵⁰⁰³⁹ is an apocalyptic number.

250039 is a deficient number, since it is larger than the sum of its proper divisors (4161).

250039 is an equidigital number, since it uses as much as digits as its factorization.

250039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4160.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 250039 is about 500.0389984791. The cubic root of 250039 is about 62.9993281191. Note that the first 3 decimals are identical.

The spelling of 250039 in words is "two hundred fifty thousand, thirty-nine".