106549309 has 4 divisors (see below), whose sum is σ = 106815420. Its totient is φ = 106283200.

The previous prime is 106549297. The next prime is 106549327. The reversal of 106549309 is 903945601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 105637284 + 912025 = 10278^2 + 955^2 .

It is a cyclic number.

It is not a de Polignac number, because 106549309 - 2¹³ = 106541117 is a prime.

It is a super-2 number, since 2×106549309² = 22705510496754962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106549369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132454 + ... + 133255.

It is an arithmetic number, because the mean of its divisors is an integer number (26703855).

Almost surely, 2^106549309 is an apocalyptic number.

It is an amenable number.

106549309 is a deficient number, since it is larger than the sum of its proper divisors (266111).

106549309 is an equidigital number, since it uses as much as digits as its factorization.

106549309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266110.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 106549309 is about 10322.2724726680. The cubic root of 106549309 is about 474.0784481481.

The spelling of 106549309 in words is "one hundred six million, five hundred forty-nine thousand, three hundred nine".