105889387 has 2 divisors, whose sum is σ = 105889388. Its totient is φ = 105889386.

The previous prime is 105889367. The next prime is 105889391. The reversal of 105889387 is 783988501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105889387 is a prime.

It is a super-2 number, since 2×105889387² = 22425124558471538, 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 105889387.

It is not a weakly prime, because it can be changed into another prime (105889307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52944693 + 52944694.

It is an arithmetic number, because the mean of its divisors is an integer number (52944694).

Almost surely, 2^105889387 is an apocalyptic number.

105889387 is a deficient number, since it is larger than the sum of its proper divisors (1).

105889387 is an equidigital number, since it uses as much as digits as its factorization.

105889387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 483840, while the sum is 49.

The square root of 105889387 is about 10290.2568966960. The cubic root of 105889387 is about 473.0976724250.

It can be divided in two parts, 105889 and 387, that added together give a square (106276 = 326²).

The spelling of 105889387 in words is "one hundred five million, eight hundred eighty-nine thousand, three hundred eighty-seven".