204693949 has 2 divisors, whose sum is σ = 204693950. Its totient is φ = 204693948.

The previous prime is 204693947. The next prime is 204694001. The reversal of 204693949 is 949396402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 180042724 + 24651225 = 13418^2 + 4965^2 .

It is a cyclic number.

It is not a de Polignac number, because 204693949 - 2¹ = 204693947 is a prime.

It is a super-2 number, since 2×204693949² = 83799225514429202, which contains 22 as substring.

Together with 204693947, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 204693899 and 204693908.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204693943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102346974 + 102346975.

It is an arithmetic number, because the mean of its divisors is an integer number (102346975).

Almost surely, 2^204693949 is an apocalyptic number.

It is an amenable number.

204693949 is a deficient number, since it is larger than the sum of its proper divisors (1).

204693949 is an equidigital number, since it uses as much as digits as its factorization.

204693949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 204693949 is about 14307.1293067477. The cubic root of 204693949 is about 589.3432786675.

The spelling of 204693949 in words is "two hundred four million, six hundred ninety-three thousand, nine hundred forty-nine".