43744369 has 4 divisors (see below), whose sum is σ = 43758144. Its totient is φ = 43730596.

The previous prime is 43744361. The next prime is 43744387. The reversal of 43744369 is 96344734.

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, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 96344734 = 2 ⋅48172367.

It is a cyclic number.

It is not a de Polignac number, because 43744369 - 2³ = 43744361 is a prime.

It is a super-2 number, since 2×43744369² = 3827139638416322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43744361) 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, 564 + ... + 9370.

It is an arithmetic number, because the mean of its divisors is an integer number (10939536).

Almost surely, 2^43744369 is an apocalyptic number.

It is an amenable number.

43744369 is a deficient number, since it is larger than the sum of its proper divisors (13775).

43744369 is an equidigital number, since it uses as much as digits as its factorization.

43744369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13774.

The product of its digits is 217728, while the sum is 40.

The square root of 43744369 is about 6613.9526003745. The cubic root of 43744369 is about 352.3498184921.

The spelling of 43744369 in words is "forty-three million, seven hundred forty-four thousand, three hundred sixty-nine".