2216949 has 16 divisors (see below), whose sum is σ = 3400320. Its totient is φ = 1258560.

The previous prime is 2216941. The next prime is 2216957. The reversal of 2216949 is 9496122.

It is an interprime number because it is at equal distance from previous prime (2216941) and next prime (2216957).

It is not a de Polignac number, because 2216949 - 2³ = 2216941 is a prime.

2216949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216941) 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 15 ways as a sum of consecutive naturals, for example, 4579 + ... + 5039.

It is an arithmetic number, because the mean of its divisors is an integer number (212520).

2^2216949 is an apocalyptic number.

It is an amenable number.

2216949 is a deficient number, since it is larger than the sum of its proper divisors (1183371).

2216949 is a wasteful number, since it uses less digits than its factorization.

2216949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 700.

The product of its digits is 7776, while the sum is 33.

The square root of 2216949 is about 1488.9422419960. The cubic root of 2216949 is about 130.3922864508.

The spelling of 2216949 in words is "two million, two hundred sixteen thousand, nine hundred forty-nine".