2263749 has 4 divisors (see below), whose sum is σ = 3018336. Its totient is φ = 1509164.

The previous prime is 2263741. The next prime is 2263753. The reversal of 2263749 is 9473622.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2263749 - 2³ = 2263741 is a prime.

It is a super-4 number, since 4×2263749⁴ (a number of 27 digits) contains 4444 as substring.

It is a d-powerful number, because it can be written as 2⁵ + 2²¹ + 6⁶ + 3⁷ + 7⁶ + 4³ + 9 .

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2263741) 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, 377289 + ... + 377294.

It is an arithmetic number, because the mean of its divisors is an integer number (754584).

2^2263749 is an apocalyptic number.

It is an amenable number.

2263749 is a deficient number, since it is larger than the sum of its proper divisors (754587).

2263749 is an equidigital number, since it uses as much as digits as its factorization.

2263749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754586.

The product of its digits is 18144, while the sum is 33.

The square root of 2263749 is about 1504.5760200136. The cubic root of 2263749 is about 131.3034358381.

The spelling of 2263749 in words is "two million, two hundred sixty-three thousand, seven hundred forty-nine".