200019949 has 2 divisors, whose sum is σ = 200019950. Its totient is φ = 200019948.

The previous prime is 200019929. The next prime is 200019979. The reversal of 200019949 is 949910002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 196504324 + 3515625 = 14018^2 + 1875^2 .

It is a cyclic number.

It is not a de Polignac number, because 200019949 - 2¹⁷ = 199888877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (200019929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100009974 + 100009975.

It is an arithmetic number, because the mean of its divisors is an integer number (100009975).

Almost surely, 2^200019949 is an apocalyptic number.

It is an amenable number.

200019949 is a deficient number, since it is larger than the sum of its proper divisors (1).

200019949 is an equidigital number, since it uses as much as digits as its factorization.

200019949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 200019949 is about 14142.8409098031. The cubic root of 200019949 is about 584.8229907394.

The spelling of 200019949 in words is "two hundred million, nineteen thousand, nine hundred forty-nine".