202489 has 4 divisors (see below), whose sum is σ = 231424. Its totient is φ = 173556.

The previous prime is 202481. The next prime is 202493. The reversal of 202489 is 984202.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 202489 - 2³ = 202481 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (202481) 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, 14457 + ... + 14470.

It is an arithmetic number, because the mean of its divisors is an integer number (57856).

2²⁰²⁴⁸⁹ is an apocalyptic number.

It is an amenable number.

202489 is a deficient number, since it is larger than the sum of its proper divisors (28935).

202489 is an equidigital number, since it uses as much as digits as its factorization.

202489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 202489 is about 449.9877776118. The cubic root of 202489 is about 58.7219513009.

The spelling of 202489 in words is "two hundred two thousand, four hundred eighty-nine".