43116649 has 4 divisors (see below), whose sum is σ = 44603460. Its totient is φ = 41629840.

The previous prime is 43116637. The next prime is 43116677. The reversal of 43116649 is 94661134.

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 23474025 + 19642624 = 4845^2 + 4432^2 .

It is a cyclic number.

It is not a de Polignac number, because 43116649 - 2²¹ = 41019497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43116679) 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, 743362 + ... + 743419.

It is an arithmetic number, because the mean of its divisors is an integer number (11150865).

Almost surely, 2^43116649 is an apocalyptic number.

It is an amenable number.

43116649 is a deficient number, since it is larger than the sum of its proper divisors (1486811).

43116649 is a wasteful number, since it uses less digits than its factorization.

43116649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1486810.

The product of its digits is 15552, while the sum is 34.

The square root of 43116649 is about 6566.3269032237. The cubic root of 43116649 is about 350.6563168107.

The spelling of 43116649 in words is "forty-three million, one hundred sixteen thousand, six hundred forty-nine".