105993409 has 4 divisors (see below), whose sum is σ = 108458416. Its totient is φ = 103528404.

The previous prime is 105993403. The next prime is 105993427. The reversal of 105993409 is 904399501.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 105993409 - 2³ = 105993401 is a prime.

It is a super-2 number, since 2×105993409² = 22469205502882562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105993401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1232439 + ... + 1232524.

It is an arithmetic number, because the mean of its divisors is an integer number (27114604).

Almost surely, 2^105993409 is an apocalyptic number.

It is an amenable number.

105993409 is a deficient number, since it is larger than the sum of its proper divisors (2465007).

105993409 is an equidigital number, since it uses as much as digits as its factorization.

105993409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2465006.

The product of its (nonzero) digits is 43740, while the sum is 40.

The square root of 105993409 is about 10295.3100487552. The cubic root of 105993409 is about 473.2525398811.

The spelling of 105993409 in words is "one hundred five million, nine hundred ninety-three thousand, four hundred nine".