100452409 has 2 divisors, whose sum is σ = 100452410. Its totient is φ = 100452408.

The previous prime is 100452403. The next prime is 100452427. The reversal of 100452409 is 904254001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89870400 + 10582009 = 9480^2 + 3253^2 .

It is a cyclic number.

It is not a de Polignac number, because 100452409 - 2⁵ = 100452377 is a prime.

It is not a weakly prime, because it can be changed into another prime (100452403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50226204 + 50226205.

It is an arithmetic number, because the mean of its divisors is an integer number (50226205).

Almost surely, 2^100452409 is an apocalyptic number.

It is an amenable number.

100452409 is a deficient number, since it is larger than the sum of its proper divisors (1).

100452409 is an equidigital number, since it uses as much as digits as its factorization.

100452409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 100452409 is about 10022.5949234717. The cubic root of 100452409 is about 464.8577959582.

The spelling of 100452409 in words is "one hundred million, four hundred fifty-two thousand, four hundred nine".