105647889 has 16 divisors (see below), whose sum is σ = 142192512. Its totient is φ = 69771648.

The previous prime is 105647879. The next prime is 105647903. The reversal of 105647889 is 988746501.

It is not a de Polignac number, because 105647889 - 2¹² = 105643793 is a prime.

It is a super-2 number, since 2×105647889² = 22322952900312642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105647849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230949 + ... + 231405.

It is an arithmetic number, because the mean of its divisors is an integer number (8887032).

Almost surely, 2^105647889 is an apocalyptic number.

It is an amenable number.

105647889 is a deficient number, since it is larger than the sum of its proper divisors (36544623).

105647889 is a wasteful number, since it uses less digits than its factorization.

105647889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016.

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 105647889 is about 10278.5158948167. The cubic root of 105647889 is about 472.7377398828.

The spelling of 105647889 in words is "one hundred five million, six hundred forty-seven thousand, eight hundred eighty-nine".