43654949 has 16 divisors (see below), whose sum is σ = 48124272. Its totient is φ = 39356928.

The previous prime is 43654939. The next prime is 43654973. The reversal of 43654949 is 94945634.

It is a happy number.

43654949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 2500 + 43652449 = 50^2 + 6607^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43654949 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43654909) 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 15 ways as a sum of consecutive naturals, for example, 148847 + ... + 149139.

It is an arithmetic number, because the mean of its divisors is an integer number (3007767).

Almost surely, 2^43654949 is an apocalyptic number.

It is an amenable number.

43654949 is a deficient number, since it is larger than the sum of its proper divisors (4469323).

43654949 is a wasteful number, since it uses less digits than its factorization.

43654949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536.

The product of its digits is 466560, while the sum is 44.

The square root of 43654949 is about 6607.1891905711. The cubic root of 43654949 is about 352.1095695616.

The spelling of 43654949 in words is "forty-three million, six hundred fifty-four thousand, nine hundred forty-nine".