105911709 has 16 divisors (see below), whose sum is σ = 145119744. Its totient is φ = 68670000.

The previous prime is 105911699. The next prime is 105911737. The reversal of 105911709 is 907119501.

It is a happy number.

It is not a de Polignac number, because 105911709 - 2²⁰ = 104863133 is a prime.

It is a super-2 number, since 2×105911709² = 22434580206601362, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 105911709.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105911759) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30744 + ... + 34014.

It is an arithmetic number, because the mean of its divisors is an integer number (9069984).

Almost surely, 2^105911709 is an apocalyptic number.

It is an amenable number.

105911709 is a deficient number, since it is larger than the sum of its proper divisors (39208035).

105911709 is a wasteful number, since it uses less digits than its factorization.

105911709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3568.

The product of its (nonzero) digits is 2835, while the sum is 33.

The square root of 105911709 is about 10291.3414577498. The cubic root of 105911709 is about 473.1309138561.

The spelling of 105911709 in words is "one hundred five million, nine hundred eleven thousand, seven hundred nine".