2106489 has 24 divisors (see below), whose sum is σ = 3532480. Its totient is φ = 1092960.

The previous prime is 2106479. The next prime is 2106491. The reversal of 2106489 is 9846012.

It is not a de Polignac number, because 2106489 - 2⁷ = 2106361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2106479) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2127 + ... + 2955.

2^2106489 is an apocalyptic number.

It is an amenable number.

2106489 is a deficient number, since it is larger than the sum of its proper divisors (1425991).

2106489 is a wasteful number, since it uses less digits than its factorization.

2106489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861 (or 850 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 2106489 is about 1451.3748654293. The cubic root of 2106489 is about 128.1896805288.

It can be divided in two parts, 2 and 106489, that added together give a triangular number (106491 = T₄₆₁).

The spelling of 2106489 in words is "two million, one hundred six thousand, four hundred eighty-nine".