202399 has 4 divisors (see below), whose sum is σ = 208960. Its totient is φ = 195840.

The previous prime is 202393. The next prime is 202403. The reversal of 202399 is 993202.

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 202399 - 2¹¹ = 200351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202393) 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, 3234 + ... + 3295.

It is an arithmetic number, because the mean of its divisors is an integer number (52240).

2²⁰²³⁹⁹ is an apocalyptic number.

202399 is a deficient number, since it is larger than the sum of its proper divisors (6561).

202399 is an equidigital number, since it uses as much as digits as its factorization.

202399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 202399 is about 449.8877637811. The cubic root of 202399 is about 58.7132499907.

The spelling of 202399 in words is "two hundred two thousand, three hundred ninety-nine".