538450949 has 2 divisors, whose sum is σ = 538450950. Its totient is φ = 538450948.

The previous prime is 538450901. The next prime is 538450951. The reversal of 538450949 is 949054835.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 449016100 + 89434849 = 21190^2 + 9457^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-538450949 is a prime.

Together with 538450951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (538450249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269225474 + 269225475.

It is an arithmetic number, because the mean of its divisors is an integer number (269225475).

Almost surely, 2^538450949 is an apocalyptic number.

It is an amenable number.

538450949 is a deficient number, since it is larger than the sum of its proper divisors (1).

538450949 is an equidigital number, since it uses as much as digits as its factorization.

538450949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 538450949 is about 23204.5458692904. The cubic root of 538450949 is about 813.5458778741.

The spelling of 538450949 in words is "five hundred thirty-eight million, four hundred fifty thousand, nine hundred forty-nine".