204369439 has 2 divisors, whose sum is σ = 204369440. Its totient is φ = 204369438.

The previous prime is 204369383. The next prime is 204369457. The reversal of 204369439 is 934963402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204369439 - 2¹³ = 204361247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204369479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102184719 + 102184720.

It is an arithmetic number, because the mean of its divisors is an integer number (102184720).

Almost surely, 2^204369439 is an apocalyptic number.

204369439 is a deficient number, since it is larger than the sum of its proper divisors (1).

204369439 is an equidigital number, since it uses as much as digits as its factorization.

204369439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 204369439 is about 14295.7839589160. The cubic root of 204369439 is about 589.0316769782.

The spelling of 204369439 in words is "two hundred four million, three hundred sixty-nine thousand, four hundred thirty-nine".