5723749 has 4 divisors (see below), whose sum is σ = 5760364. Its totient is φ = 5687136.

The previous prime is 5723737. The next prime is 5723779. The reversal of 5723749 is 9473275.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2951524 + 2772225 = 1718^2 + 1665^2 .

It is a cyclic number.

It is not a de Polignac number, because 5723749 - 2⁷ = 5723621 is a prime.

It is a super-2 number, since 2×5723749² = 65522605230002, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5723719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18072 + ... + 18385.

It is an arithmetic number, because the mean of its divisors is an integer number (1440091).

Almost surely, 2^5723749 is an apocalyptic number.

It is an amenable number.

5723749 is a deficient number, since it is larger than the sum of its proper divisors (36615).

5723749 is a wasteful number, since it uses less digits than its factorization.

5723749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36614.

The product of its digits is 52920, while the sum is 37.

The square root of 5723749 is about 2392.4357880620. The cubic root of 5723749 is about 178.8793440090.

The spelling of 5723749 in words is "five million, seven hundred twenty-three thousand, seven hundred forty-nine".