204130439 has 2 divisors, whose sum is σ = 204130440. Its totient is φ = 204130438.

The previous prime is 204130403. The next prime is 204130477. The reversal of 204130439 is 934031402.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204130439 is a prime.

It is a super-2 number, since 2×204130439² = 83338472252665442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204130639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102065219 + 102065220.

It is an arithmetic number, because the mean of its divisors is an integer number (102065220).

Almost surely, 2^204130439 is an apocalyptic number.

204130439 is a deficient number, since it is larger than the sum of its proper divisors (1).

204130439 is an equidigital number, since it uses as much as digits as its factorization.

204130439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 204130439 is about 14287.4224057386. The cubic root of 204130439 is about 588.8019728942.

The spelling of 204130439 in words is "two hundred four million, one hundred thirty thousand, four hundred thirty-nine".