2216149 has 4 divisors (see below), whose sum is σ = 2386636. Its totient is φ = 2045664.

The previous prime is 2216143. The next prime is 2216153. The reversal of 2216149 is 9416122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1397124 + 819025 = 1182^2 + 905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216149 - 2⁵ = 2216117 is a prime.

It is a super-2 number, since 2×2216149² = 9822632780402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2216143) 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, 85224 + ... + 85249.

It is an arithmetic number, because the mean of its divisors is an integer number (596659).

2^2216149 is an apocalyptic number.

It is an amenable number.

2216149 is a deficient number, since it is larger than the sum of its proper divisors (170487).

2216149 is a wasteful number, since it uses less digits than its factorization.

2216149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170486.

The product of its digits is 864, while the sum is 25.

The square root of 2216149 is about 1488.6735706662. The cubic root of 2216149 is about 130.3766002714.

The spelling of 2216149 in words is "two million, two hundred sixteen thousand, one hundred forty-nine".