2249864 has 8 divisors (see below), whose sum is σ = 4218510. Its totient is φ = 1124928.

The previous prime is 2249861. The next prime is 2249867. The reversal of 2249864 is 4689422.

It is an interprime number because it is at equal distance from previous prime (2249861) and next prime (2249867).

It can be written as a sum of positive squares in only one way, i.e., 1800964 + 448900 = 1342^2 + 670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (2249861) by changing a digit.

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 as a sum of consecutive naturals, namely, 140609 + ... + 140624.

2^2249864 is an apocalyptic number.

It is an amenable number.

2249864 is a deficient number, since it is larger than the sum of its proper divisors (1968646).

2249864 is a wasteful number, since it uses less digits than its factorization.

2249864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281239 (or 281235 counting only the distinct ones).

The product of its digits is 27648, while the sum is 35.

The square root of 2249864 is about 1499.9546659816. The cubic root of 2249864 is about 131.0344295030.

It can be divided in two parts, 2249 and 864, that added together give a palindrome (3113).

The spelling of 2249864 in words is "two million, two hundred forty-nine thousand, eight hundred sixty-four".