43649041 has 4 divisors (see below), whose sum is σ = 44577792. Its totient is φ = 42720292.

The previous prime is 43649033. The next prime is 43649059. The reversal of 43649041 is 14094634.

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 an emirpimes, since its reverse is a distinct semiprime: 14094634 = 2 ⋅7047317.

It is a cyclic number.

It is not a de Polignac number, because 43649041 - 2³ = 43649033 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43648994 and 43649012.

It is not an unprimeable number, because it can be changed into a prime (43649341) 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, 464305 + ... + 464398.

It is an arithmetic number, because the mean of its divisors is an integer number (11144448).

Almost surely, 2^43649041 is an apocalyptic number.

It is an amenable number.

43649041 is a deficient number, since it is larger than the sum of its proper divisors (928751).

43649041 is an equidigital number, since it uses as much as digits as its factorization.

43649041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 928750.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 43649041 is about 6606.7420866869. The cubic root of 43649041 is about 352.0936847098.

The spelling of 43649041 in words is "forty-three million, six hundred forty-nine thousand, forty-one".