105195947 has 4 divisors (see below), whose sum is σ = 105587280. Its totient is φ = 104804616.

The previous prime is 105195941. The next prime is 105195971. The reversal of 105195947 is 749591501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105195947 - 2¹⁰ = 105194923 is a prime.

It is a super-2 number, since 2×105195947² = 22132374530453618, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105195941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 195263 + ... + 195800.

It is an arithmetic number, because the mean of its divisors is an integer number (26396820).

Almost surely, 2^105195947 is an apocalyptic number.

105195947 is a deficient number, since it is larger than the sum of its proper divisors (391333).

105195947 is an equidigital number, since it uses as much as digits as its factorization.

105195947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391332.

The product of its (nonzero) digits is 56700, while the sum is 41.

The square root of 105195947 is about 10256.5075439937. The cubic root of 105195947 is about 472.0626816951.

The spelling of 105195947 in words is "one hundred five million, one hundred ninety-five thousand, nine hundred forty-seven".