43649045 has 16 divisors (see below), whose sum is σ = 57682368. Its totient is φ = 31443840.

The previous prime is 43649033. The next prime is 43649059. The reversal of 43649045 is 54094634.

It is not a de Polignac number, because 43649045 - 2⁴ = 43649029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 43648996 and 43649014.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2177 + ... + 9593.

It is an arithmetic number, because the mean of its divisors is an integer number (3605148).

Almost surely, 2^43649045 is an apocalyptic number.

It is an amenable number.

43649045 is a deficient number, since it is larger than the sum of its proper divisors (14033323).

43649045 is a wasteful number, since it uses less digits than its factorization.

43649045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7540.

The product of its (nonzero) digits is 51840, while the sum is 35.

The square root of 43649045 is about 6606.7423894080. The cubic root of 43649045 is about 352.0936954651.

The spelling of 43649045 in words is "forty-three million, six hundred forty-nine thousand, forty-five".