106905289 has 4 divisors (see below), whose sum is σ = 106972624. Its totient is φ = 106837956.

The previous prime is 106905283. The next prime is 106905313. The reversal of 106905289 is 982509601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 982509601 = 53 ⋅18537917.

It is a cyclic number.

It is not a de Polignac number, because 106905289 - 2²⁵ = 73350857 is a prime.

It is a super-2 number, since 2×106905289² = 22857481632347042, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106905283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31227 + ... + 34480.

It is an arithmetic number, because the mean of its divisors is an integer number (26743156).

Almost surely, 2^106905289 is an apocalyptic number.

It is an amenable number.

106905289 is a deficient number, since it is larger than the sum of its proper divisors (67335).

106905289 is an equidigital number, since it uses as much as digits as its factorization.

106905289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67334.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 106905289 is about 10339.5013902992. The cubic root of 106905289 is about 474.6058247877.

The spelling of 106905289 in words is "one hundred six million, nine hundred five thousand, two hundred eighty-nine".