2106449 has 4 divisors (see below), whose sum is σ = 2119536. Its totient is φ = 2093364.

The previous prime is 2106437. The next prime is 2106451. The reversal of 2106449 is 9446012.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106449 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 6299 + ... + 6624.

It is an arithmetic number, because the mean of its divisors is an integer number (529884).

2^2106449 is an apocalyptic number.

It is an amenable number.

2106449 is a deficient number, since it is larger than the sum of its proper divisors (13087).

2106449 is a wasteful number, since it uses less digits than its factorization.

2106449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13086.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 2106449 is about 1451.3610853265. The cubic root of 2106449 is about 128.1888691282.

The spelling of 2106449 in words is "two million, one hundred six thousand, four hundred forty-nine".