204172393 has 2 divisors, whose sum is σ = 204172394. Its totient is φ = 204172392.

The previous prime is 204172387. The next prime is 204172421. The reversal of 204172393 is 393271402.

204172393 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 174979984 + 29192409 = 13228^2 + 5403^2 .

It is a cyclic number.

It is not a de Polignac number, because 204172393 - 2⁵ = 204172361 is a prime.

It is not a weakly prime, because it can be changed into another prime (204172303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102086196 + 102086197.

It is an arithmetic number, because the mean of its divisors is an integer number (102086197).

Almost surely, 2^204172393 is an apocalyptic number.

It is an amenable number.

204172393 is a deficient number, since it is larger than the sum of its proper divisors (1).

204172393 is an equidigital number, since it uses as much as digits as its factorization.

204172393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 204172393 is about 14288.8905447554. The cubic root of 204172393 is about 588.8423080609.

The spelling of 204172393 in words is "two hundred four million, one hundred seventy-two thousand, three hundred ninety-three".