43999741 has 4 divisors (see below), whose sum is σ = 44435484. Its totient is φ = 43564000.

The previous prime is 43999679. The next prime is 43999751. The reversal of 43999741 is 14799934.

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 37088100 + 6911641 = 6090^2 + 2629^2 .

It is a cyclic number.

It is not a de Polignac number, because 43999741 - 2⁹ = 43999229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43999691 and 43999700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43999751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 217720 + ... + 217921.

It is an arithmetic number, because the mean of its divisors is an integer number (11108871).

Almost surely, 2^43999741 is an apocalyptic number.

It is an amenable number.

43999741 is a deficient number, since it is larger than the sum of its proper divisors (435743).

43999741 is a wasteful number, since it uses less digits than its factorization.

43999741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435742.

The product of its digits is 244944, while the sum is 46.

The square root of 43999741 is about 6633.2300578225. The cubic root of 43999741 is about 353.0341408341.

The spelling of 43999741 in words is "forty-three million, nine hundred ninety-nine thousand, seven hundred forty-one".