204199423 has 2 divisors, whose sum is σ = 204199424. Its totient is φ = 204199422.

The previous prime is 204199409. The next prime is 204199481. The reversal of 204199423 is 324991402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204199423 - 2¹³ = 204191231 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204199123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102099711 + 102099712.

It is an arithmetic number, because the mean of its divisors is an integer number (102099712).

Almost surely, 2^204199423 is an apocalyptic number.

204199423 is a deficient number, since it is larger than the sum of its proper divisors (1).

204199423 is an equidigital number, since it uses as much as digits as its factorization.

204199423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 204199423 is about 14289.8363531567. The cubic root of 204199423 is about 588.8682921570.

The spelling of 204199423 in words is "two hundred four million, one hundred ninety-nine thousand, four hundred twenty-three".