2149444 has 18 divisors (see below), whose sum is σ = 4135502. Its totient is φ = 976800.

The previous prime is 2149421. The next prime is 2149453. The reversal of 2149444 is 4449412.

2149444 = T₄₃₁ + T₄₃₂ + ... + T₄₅₂.

It can be written as a sum of positive squares in only one way, i.e., 1742400 + 407044 = 1320^2 + 638^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1737 + ... + 2704.

2^2149444 is an apocalyptic number.

It is an amenable number.

2149444 is a deficient number, since it is larger than the sum of its proper divisors (1986058).

2149444 is a wasteful number, since it uses less digits than its factorization.

2149444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4467 (or 4454 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 2149444 is about 1466.0982231761. The cubic root of 2149444 is about 129.0551613941.

Subtracting 2149444 from its reverse (4449412), we obtain a cube (2299968 = 132³).

The spelling of 2149444 in words is "two million, one hundred forty-nine thousand, four hundred forty-four".