202849 has 4 divisors (see below), whose sum is σ = 204820. Its totient is φ = 200880.

The previous prime is 202841. The next prime is 202859. The reversal of 202849 is 948202.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948202 = 2 ⋅474101.

It can be written as a sum of positive squares in 2 ways, for example, as 48400 + 154449 = 220^2 + 393^2 .

It is a cyclic number.

It is not a de Polignac number, because 202849 - 2³ = 202841 is a prime.

It is a super-2 number, since 2×202849² = 82295433602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822 + ... + 1039.

It is an arithmetic number, because the mean of its divisors is an integer number (51205).

2²⁰²⁸⁴⁹ is an apocalyptic number.

It is an amenable number.

202849 is a deficient number, since it is larger than the sum of its proper divisors (1971).

202849 is a wasteful number, since it uses less digits than its factorization.

202849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1970.

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

The square root of 202849 is about 450.3876108420. The cubic root of 202849 is about 58.7567307816.

The spelling of 202849 in words is "two hundred two thousand, eight hundred forty-nine".