100009549 has 2 divisors, whose sum is σ = 100009550. Its totient is φ = 100009548.

The previous prime is 100009517. The next prime is 100009573. The reversal of 100009549 is 945900001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62884900 + 37124649 = 7930^2 + 6093^2 .

It is a cyclic number.

It is not a de Polignac number, because 100009549 - 2⁵ = 100009517 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 (100009649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50004774 + 50004775.

It is an arithmetic number, because the mean of its divisors is an integer number (50004775).

Almost surely, 2^100009549 is an apocalyptic number.

It is an amenable number.

100009549 is a deficient number, since it is larger than the sum of its proper divisors (1).

100009549 is an equidigital number, since it uses as much as digits as its factorization.

100009549 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 28.

The square root of 100009549 is about 10000.4774386026. The cubic root of 100009549 is about 464.1736570683.

The spelling of 100009549 in words is "one hundred million, nine thousand, five hundred forty-nine".