100169449 has 2 divisors, whose sum is σ = 100169450. Its totient is φ = 100169448.

The previous prime is 100169431. The next prime is 100169453. The reversal of 100169449 is 944961001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81090025 + 19079424 = 9005^2 + 4368^2 .

It is an emirp because it is prime and its reverse (944961001) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100169449 is a prime.

It is not a weakly prime, because it can be changed into another prime (100169429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50084724 + 50084725.

It is an arithmetic number, because the mean of its divisors is an integer number (50084725).

Almost surely, 2^100169449 is an apocalyptic number.

It is an amenable number.

100169449 is a deficient number, since it is larger than the sum of its proper divisors (1).

100169449 is an equidigital number, since it uses as much as digits as its factorization.

100169449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 100169449 is about 10008.4688639172. The cubic root of 100169449 is about 464.4209062806.

The spelling of 100169449 in words is "one hundred million, one hundred sixty-nine thousand, four hundred forty-nine".