100436309 has 6 divisors (see below), whose sum is σ = 103955490. Its totient is φ = 96920880.

The previous prime is 100436293. The next prime is 100436339. The reversal of 100436309 is 903634001.

It can be written as a sum of positive squares in 3 ways, for example, as 11662225 + 88774084 = 3415^2 + 9422^2 .

It is not a de Polignac number, because 100436309 - 2⁴ = 100436293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100436339) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 53039 + ... + 54899.

It is an arithmetic number, because the mean of its divisors is an integer number (17325915).

Almost surely, 2^100436309 is an apocalyptic number.

It is an amenable number.

100436309 is a deficient number, since it is larger than the sum of its proper divisors (3519181).

100436309 is an frugal number, since it uses more digits than its factorization.

100436309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3751 (or 1890 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 100436309 is about 10021.7917060773. The cubic root of 100436309 is about 464.8329596187.

The spelling of 100436309 in words is "one hundred million, four hundred thirty-six thousand, three hundred nine".