2049867 has 10 divisors (see below), whose sum is σ = 3062268. Its totient is φ = 1366524.

The previous prime is 2049863. The next prime is 2049893. The reversal of 2049867 is 7689402.

It is not a de Polignac number, because 2049867 - 2² = 2049863 is a prime.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (2049863) 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 9 ways as a sum of consecutive naturals, for example, 12573 + ... + 12734.

2^2049867 is an apocalyptic number.

2049867 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2049867 is a deficient number, since it is larger than the sum of its proper divisors (1012401).

2049867 is an equidigital number, since it uses as much as digits as its factorization.

2049867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25319 (or 25310 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 2049867 is about 1431.7356599596. The cubic root of 2049867 is about 127.0306619913.

It can be divided in two parts, 2049 and 867, that added together give a square (2916 = 54²).

The spelling of 2049867 in words is "two million, forty-nine thousand, eight hundred sixty-seven".