105982387 has 4 divisors (see below), whose sum is σ = 121122736. Its totient is φ = 90842040.

The previous prime is 105982363. The next prime is 105982391. The reversal of 105982387 is 783289501.

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 105982387 - 2¹¹ = 105980339 is a prime.

It is a super-2 number, since 2×105982387² = 22464532708435538, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105982307) 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, 7570164 + ... + 7570177.

It is an arithmetic number, because the mean of its divisors is an integer number (30280684).

Almost surely, 2^105982387 is an apocalyptic number.

105982387 is a deficient number, since it is larger than the sum of its proper divisors (15140349).

105982387 is an equidigital number, since it uses as much as digits as its factorization.

105982387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15140348.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 105982387 is about 10294.7747425575. The cubic root of 105982387 is about 473.2361351809.

The spelling of 105982387 in words is "one hundred five million, nine hundred eighty-two thousand, three hundred eighty-seven".