105989587 has 6 divisors (see below), whose sum is σ = 116501084. Its totient is φ = 96354060.

The previous prime is 105989573. The next prime is 105989621. The reversal of 105989587 is 785989501.

It is not a de Polignac number, because 105989587 - 2⁷ = 105989459 is a prime.

It is a super-2 number, since 2×105989587² = 22467585104861138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105989567) 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 5 ways as a sum of consecutive naturals, for example, 437853 + ... + 438094.

Almost surely, 2^105989587 is an apocalyptic number.

105989587 is a deficient number, since it is larger than the sum of its proper divisors (10511497).

105989587 is an equidigital number, since it uses as much as digits as its factorization.

105989587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875969 (or 875958 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 52.

The square root of 105989587 is about 10295.1244285827. The cubic root of 105989587 is about 473.2468514993.

The spelling of 105989587 in words is "one hundred five million, nine hundred eighty-nine thousand, five hundred eighty-seven".