105286109 has 4 divisors (see below), whose sum is σ = 105983520. Its totient is φ = 104588700.

The previous prime is 105286099. The next prime is 105286177. The reversal of 105286109 is 901682501.

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, and also an emirpimes, since its reverse is a distinct semiprime: 901682501 = 23 ⋅39203587.

It is a cyclic number.

It is not a de Polignac number, because 105286109 - 2⁸ = 105285853 is a prime.

It is a super-2 number, since 2×105286109² = 22170329496719762, 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 (105286009) 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, 348479 + ... + 348780.

It is an arithmetic number, because the mean of its divisors is an integer number (26495880).

Almost surely, 2^105286109 is an apocalyptic number.

It is an amenable number.

105286109 is a deficient number, since it is larger than the sum of its proper divisors (697411).

105286109 is an equidigital number, since it uses as much as digits as its factorization.

105286109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 697410.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 105286109 is about 10260.9019584050. The cubic root of 105286109 is about 472.1975093278.

The spelling of 105286109 in words is "one hundred five million, two hundred eighty-six thousand, one hundred nine".