2249743 has 2 divisors, whose sum is σ = 2249744. Its totient is φ = 2249742.

The previous prime is 2249719. The next prime is 2249747. The reversal of 2249743 is 3479422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2249743 - 2⁹ = 2249231 is a prime.

It is a super-2 number, since 2×2249743² = 10122687132098, which contains 22 as substring.

It is an Ulam number.

It is a d-powerful number, because it can be written as 2 + 2¹⁹ + 4⁸ + 9 + 7² + 4⁸ + 3¹³ .

2249743 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2249747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1124871 + 1124872.

It is an arithmetic number, because the mean of its divisors is an integer number (1124872).

2^2249743 is an apocalyptic number.

2249743 is a deficient number, since it is larger than the sum of its proper divisors (1).

2249743 is an equidigital number, since it uses as much as digits as its factorization.

2249743 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 2249743 is about 1499.9143308869. The cubic root of 2249743 is about 131.0320804054.

It can be divided in two parts, 2249 and 743, that added together give a palindrome (2992).

The spelling of 2249743 in words is "two million, two hundred forty-nine thousand, seven hundred forty-three".