43679849 has 2 divisors, whose sum is σ = 43679850. Its totient is φ = 43679848.

The previous prime is 43679827. The next prime is 43679891. The reversal of 43679849 is 94897634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43626025 + 53824 = 6605^2 + 232^2 .

It is a cyclic number.

It is not a de Polignac number, because 43679849 - 2⁸ = 43679593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 43679797 and 43679806.

It is not a weakly prime, because it can be changed into another prime (43679819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21839924 + 21839925.

It is an arithmetic number, because the mean of its divisors is an integer number (21839925).

Almost surely, 2^43679849 is an apocalyptic number.

It is an amenable number.

43679849 is a deficient number, since it is larger than the sum of its proper divisors (1).

43679849 is an equidigital number, since it uses as much as digits as its factorization.

43679849 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1306368, while the sum is 50.

The square root of 43679849 is about 6609.0732330638. The cubic root of 43679849 is about 352.1765024987.

The spelling of 43679849 in words is "forty-three million, six hundred seventy-nine thousand, eight hundred forty-nine".