204211393 has 2 divisors, whose sum is σ = 204211394. Its totient is φ = 204211392.

The previous prime is 204211379. The next prime is 204211409. The reversal of 204211393 is 393112402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 200279104 + 3932289 = 14152^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 204211393 - 2¹⁷ = 204080321 is a prime.

It is not a weakly prime, because it can be changed into another prime (204211303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102105696 + 102105697.

It is an arithmetic number, because the mean of its divisors is an integer number (102105697).

Almost surely, 2^204211393 is an apocalyptic number.

It is an amenable number.

204211393 is a deficient number, since it is larger than the sum of its proper divisors (1).

204211393 is an equidigital number, since it uses as much as digits as its factorization.

204211393 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 204211393 is about 14290.2551761681. The cubic root of 204211393 is about 588.8797982550.

Adding to 204211393 its reverse (393112402), we get a palindrome (597323795).

The spelling of 204211393 in words is "two hundred four million, two hundred eleven thousand, three hundred ninety-three".