204422993 has 2 divisors, whose sum is σ = 204422994. Its totient is φ = 204422992.

The previous prime is 204422971. The next prime is 204423013. The reversal of 204422993 is 399224402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 104182849 + 100240144 = 10207^2 + 10012^2 .

It is a cyclic number.

It is not a de Polignac number, because 204422993 - 2⁶ = 204422929 is a prime.

It is not a weakly prime, because it can be changed into another prime (204422593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102211496 + 102211497.

It is an arithmetic number, because the mean of its divisors is an integer number (102211497).

Almost surely, 2^204422993 is an apocalyptic number.

It is an amenable number.

204422993 is a deficient number, since it is larger than the sum of its proper divisors (1).

204422993 is an equidigital number, since it uses as much as digits as its factorization.

204422993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 204422993 is about 14297.6569059409. The cubic root of 204422993 is about 589.0831234300.

The spelling of 204422993 in words is "two hundred four million, four hundred twenty-two thousand, nine hundred ninety-three".