103986109 has 4 divisors (see below), whose sum is σ = 104940220. Its totient is φ = 103032000.

The previous prime is 103986101. The next prime is 103986133. The reversal of 103986109 is 901689301.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 901689301 = 13577 ⋅66413.

It can be written as a sum of positive squares in 2 ways, for example, as 25220484 + 78765625 = 5022^2 + 8875^2 .

It is a cyclic number.

It is not a de Polignac number, because 103986109 - 2³ = 103986101 is a prime.

It is a super-2 number, since 2×103986109² = 21626221729919762, 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 (103986101) 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, 476892 + ... + 477109.

It is an arithmetic number, because the mean of its divisors is an integer number (26235055).

Almost surely, 2^103986109 is an apocalyptic number.

It is an amenable number.

103986109 is a deficient number, since it is larger than the sum of its proper divisors (954111).

103986109 is an equidigital number, since it uses as much as digits as its factorization.

103986109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 954110.

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 103986109 is about 10197.3579421338. The cubic root of 103986109 is about 470.2459991823.

The spelling of 103986109 in words is "one hundred three million, nine hundred eighty-six thousand, one hundred nine".