202439 has 4 divisors (see below), whose sum is σ = 204624.
Its totient is φ = 200256.
The previous prime is 202409. The next prime is 202441. The reversal of 202439 is 934202.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934202 = 2 ⋅467101.
It is a cyclic number.
It is not a de Polignac number, because 202439 - 28 = 202183 is a prime.
It is a Duffinian number.
202439 is a modest number, since divided by 2439 gives 2 as remainder.
It is a self number, because there is not a number n which added to its sum of digits gives 202439.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (202409) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 947 + ... + 1140.
It is an arithmetic number, because the mean of its divisors is an integer number (51156).
2202439 is an apocalyptic number.
202439 is a deficient number, since it is larger than the sum of its proper divisors (2185).
202439 is an equidigital number, since it uses as much as digits as its factorization.
202439 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2184.
The product of its (nonzero) digits is 432, while the sum is 20.
The square root of 202439 is about 449.9322171172.
The cubic root of 202439 is about 58.7171175580.
The spelling of 202439 in words is "two hundred two thousand, four hundred thirty-nine".