43695689 has 2 divisors, whose sum is σ = 43695690. Its totient is φ = 43695688.

The previous prime is 43695679. The next prime is 43695713. The reversal of 43695689 is 98659634.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 34904464 + 8791225 = 5908^2 + 2965^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43695689 is a prime.

It is not a weakly prime, because it can be changed into another prime (43695629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21847844 + 21847845.

It is an arithmetic number, because the mean of its divisors is an integer number (21847845).

Almost surely, 2^43695689 is an apocalyptic number.

It is an amenable number.

43695689 is a deficient number, since it is larger than the sum of its proper divisors (1).

43695689 is an equidigital number, since it uses as much as digits as its factorization.

43695689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1399680, while the sum is 50.

The square root of 43695689 is about 6610.2714770272. The cubic root of 43695689 is about 352.2190682870.

The spelling of 43695689 in words is "forty-three million, six hundred ninety-five thousand, six hundred eighty-nine".