204387369 has 4 divisors (see below), whose sum is σ = 272516496. Its totient is φ = 136258244.

The previous prime is 204387347. The next prime is 204387373. The reversal of 204387369 is 963783402.

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 204387369 - 2⁷ = 204387241 is a prime.

It is a super-2 number, since 2×204387369² = 83548393213484322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 204387369.

It is not an unprimeable number, because it can be changed into a prime (204382369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34064559 + ... + 34064564.

It is an arithmetic number, because the mean of its divisors is an integer number (68129124).

Almost surely, 2^204387369 is an apocalyptic number.

It is an amenable number.

204387369 is a deficient number, since it is larger than the sum of its proper divisors (68129127).

204387369 is an equidigital number, since it uses as much as digits as its factorization.

204387369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68129126.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 204387369 is about 14296.4110531280. The cubic root of 204387369 is about 589.0489023670.

The spelling of 204387369 in words is "two hundred four million, three hundred eighty-seven thousand, three hundred sixty-nine".