204277139 has 8 divisors (see below), whose sum is σ = 222955968. Its totient is φ = 185616360.

The previous prime is 204277121. The next prime is 204277163. The reversal of 204277139 is 931772402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204277139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204277099 and 204277108.

It is not an unprimeable number, because it can be changed into a prime (204277109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32144 + ... + 37970.

It is an arithmetic number, because the mean of its divisors is an integer number (27869496).

Almost surely, 2^204277139 is an apocalyptic number.

204277139 is a deficient number, since it is larger than the sum of its proper divisors (18678829).

204277139 is a wasteful number, since it uses less digits than its factorization.

204277139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9025.

The product of its (nonzero) digits is 21168, while the sum is 35.

The square root of 204277139 is about 14292.5553698420. Note that the first 3 decimals coincide. The cubic root of 204277139 is about 588.9429882277.

The spelling of 204277139 in words is "two hundred four million, two hundred seventy-seven thousand, one hundred thirty-nine".