202009949 has 2 divisors, whose sum is σ = 202009950. Its totient is φ = 202009948.

The previous prime is 202009921. The next prime is 202009961. The reversal of 202009949 is 949900202.

202009949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201924100 + 85849 = 14210^2 + 293^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-202009949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202009849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101004974 + 101004975.

It is an arithmetic number, because the mean of its divisors is an integer number (101004975).

Almost surely, 2^202009949 is an apocalyptic number.

It is an amenable number.

202009949 is a deficient number, since it is larger than the sum of its proper divisors (1).

202009949 is an equidigital number, since it uses as much as digits as its factorization.

202009949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 202009949 is about 14213.0204038410. The cubic root of 202009949 is about 586.7560635908.

The spelling of 202009949 in words is "two hundred two million, nine thousand, nine hundred forty-nine".