105639853 has 8 divisors (see below), whose sum is σ = 122022720. Its totient is φ = 90386880.

The previous prime is 105639817. The next prime is 105639869. The reversal of 105639853 is 358936501.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 105639853 - 2²¹ = 103542701 is a prime.

It is a super-2 number, since 2×105639853² = 22319557083723218, 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 (105639883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 282273 + ... + 282646.

It is an arithmetic number, because the mean of its divisors is an integer number (15252840).

Almost surely, 2^105639853 is an apocalyptic number.

It is an amenable number.

105639853 is a deficient number, since it is larger than the sum of its proper divisors (16382867).

105639853 is a wasteful number, since it uses less digits than its factorization.

105639853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 564947.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 105639853 is about 10278.1249749164. The cubic root of 105639853 is about 472.7257534726.

The spelling of 105639853 in words is "one hundred five million, six hundred thirty-nine thousand, eight hundred fifty-three".