105839969 has 2 divisors, whose sum is σ = 105839970. Its totient is φ = 105839968.

The previous prime is 105839939. The next prime is 105840001. The reversal of 105839969 is 969938501.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 68690944 + 37149025 = 8288^2 + 6095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105839969 is a prime.

It is a super-2 number, since 2×105839969² = 22404198075841922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (105839939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52919984 + 52919985.

It is an arithmetic number, because the mean of its divisors is an integer number (52919985).

Almost surely, 2^105839969 is an apocalyptic number.

It is an amenable number.

105839969 is a deficient number, since it is larger than the sum of its proper divisors (1).

105839969 is an equidigital number, since it uses as much as digits as its factorization.

105839969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 524880, while the sum is 50.

The square root of 105839969 is about 10287.8554130586. The cubic root of 105839969 is about 473.0240636042.

The spelling of 105839969 in words is "one hundred five million, eight hundred thirty-nine thousand, nine hundred sixty-nine".