206054393 has 2 divisors, whose sum is σ = 206054394. Its totient is φ = 206054392.

The previous prime is 206054347. The next prime is 206054417. The reversal of 206054393 is 393450602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 146579449 + 59474944 = 12107^2 + 7712^2 .

It is a cyclic number.

It is not a de Polignac number, because 206054393 - 2¹⁰ = 206053369 is a prime.

It is equal to p_11395463 and since 206054393 and 11395463 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (206054333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103027196 + 103027197.

It is an arithmetic number, because the mean of its divisors is an integer number (103027197).

Almost surely, 2^206054393 is an apocalyptic number.

It is an amenable number.

206054393 is a deficient number, since it is larger than the sum of its proper divisors (1).

206054393 is an equidigital number, since it uses as much as digits as its factorization.

206054393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 32.

The square root of 206054393 is about 14354.5948392840. The cubic root of 206054393 is about 590.6460346661.

The spelling of 206054393 in words is "two hundred six million, fifty-four thousand, three hundred ninety-three".