105739839 has 6 divisors (see below), whose sum is σ = 152735336. Its totient is φ = 70493220.

The previous prime is 105739817. The next prime is 105739867. The reversal of 105739839 is 938937501.

It is a happy number.

It is not a de Polignac number, because 105739839 - 2⁸ = 105739583 is a prime.

It is a super-2 number, since 2×105739839² = 22361827103491842, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 105739794 and 105739803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105739889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5874427 + ... + 5874444.

Almost surely, 2^105739839 is an apocalyptic number.

105739839 is a deficient number, since it is larger than the sum of its proper divisors (46995497).

105739839 is a wasteful number, since it uses less digits than its factorization.

105739839 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11748877 (or 11748874 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 105739839 is about 10282.9878440072. The cubic root of 105739839 is about 472.8748482557.

The spelling of 105739839 in words is "one hundred five million, seven hundred thirty-nine thousand, eight hundred thirty-nine".