2243961 has 6 divisors (see below), whose sum is σ = 3241290. Its totient is φ = 1495968.

The previous prime is 2243959. The next prime is 2243987. The reversal of 2243961 is 1693422.

It can be written as a sum of positive squares in only one way, i.e., 2013561 + 230400 = 1419^2 + 480^2 .

It is not a de Polignac number, because 2243961 - 2¹ = 2243959 is a prime.

It is a d-powerful number, because it can be written as 2⁷ + 2¹⁵ + 4 + 3 + 9⁶ + 6⁸ + 1 .

It is not an unprimeable number, because it can be changed into a prime (2243911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124656 + ... + 124673.

It is an arithmetic number, because the mean of its divisors is an integer number (540215).

2^2243961 is an apocalyptic number.

It is an amenable number.

2243961 is a deficient number, since it is larger than the sum of its proper divisors (997329).

2243961 is a wasteful number, since it uses less digits than its factorization.

2243961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249335 (or 249332 counting only the distinct ones).

The product of its digits is 2592, while the sum is 27.

The square root of 2243961 is about 1497.9856474613. The cubic root of 2243961 is about 130.9197301696.

It can be divided in two parts, 22439 and 61, that added together give a square (22500 = 150²).

The spelling of 2243961 in words is "two million, two hundred forty-three thousand, nine hundred sixty-one".