100238549 has 2 divisors, whose sum is σ = 100238550. Its totient is φ = 100238548.

The previous prime is 100238507. The next prime is 100238557. The reversal of 100238549 is 945832001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73788100 + 26450449 = 8590^2 + 5143^2 .

It is a cyclic number.

It is not a de Polignac number, because 100238549 - 2¹⁶ = 100173013 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (100238249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50119274 + 50119275.

It is an arithmetic number, because the mean of its divisors is an integer number (50119275).

Almost surely, 2^100238549 is an apocalyptic number.

It is an amenable number.

100238549 is a deficient number, since it is larger than the sum of its proper divisors (1).

100238549 is an equidigital number, since it uses as much as digits as its factorization.

100238549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 100238549 is about 10011.9203452684. The cubic root of 100238549 is about 464.5276723939.

The spelling of 100238549 in words is "one hundred million, two hundred thirty-eight thousand, five hundred forty-nine".