204600139 has 2 divisors, whose sum is σ = 204600140. Its totient is φ = 204600138.

The previous prime is 204600119. The next prime is 204600167. The reversal of 204600139 is 931006402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204600139 - 2⁹ = 204599627 is a prime.

It is a super-2 number, since 2×204600139² = 83722433757638642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (204600119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102300069 + 102300070.

It is an arithmetic number, because the mean of its divisors is an integer number (102300070).

Almost surely, 2^204600139 is an apocalyptic number.

204600139 is a deficient number, since it is larger than the sum of its proper divisors (1).

204600139 is an equidigital number, since it uses as much as digits as its factorization.

204600139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 204600139 is about 14303.8504955833. The cubic root of 204600139 is about 589.2532340893.

The spelling of 204600139 in words is "two hundred four million, six hundred thousand, one hundred thirty-nine".