105108389 has 4 divisors (see below), whose sum is σ = 105317856. Its totient is φ = 104898924.

The previous prime is 105108343. The next prime is 105108391. The reversal of 105108389 is 983801501.

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 105108389 - 2¹⁶ = 105042853 is a prime.

It is a super-2 number, since 2×105108389² = 22095546876350642, 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 (105108889) 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, 103979 + ... + 104984.

It is an arithmetic number, because the mean of its divisors is an integer number (26329464).

Almost surely, 2^105108389 is an apocalyptic number.

It is an amenable number.

105108389 is a deficient number, since it is larger than the sum of its proper divisors (209467).

105108389 is an equidigital number, since it uses as much as digits as its factorization.

105108389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209466.

The product of its (nonzero) digits is 8640, while the sum is 35.

The square root of 105108389 is about 10252.2382434276. The cubic root of 105108389 is about 471.9316743121.

The spelling of 105108389 in words is "one hundred five million, one hundred eight thousand, three hundred eighty-nine".