43697041 has 2 divisors, whose sum is σ = 43697042. Its totient is φ = 43697040.

The previous prime is 43697039. The next prime is 43697051. The reversal of 43697041 is 14079634.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26224641 + 17472400 = 5121^2 + 4180^2 .

It is a cyclic number.

It is not a de Polignac number, because 43697041 - 2¹ = 43697039 is a prime.

Together with 43697039, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 43696988 and 43697006.

It is not a weakly prime, because it can be changed into another prime (43697051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21848520 + 21848521.

It is an arithmetic number, because the mean of its divisors is an integer number (21848521).

Almost surely, 2^43697041 is an apocalyptic number.

It is an amenable number.

43697041 is a deficient number, since it is larger than the sum of its proper divisors (1).

43697041 is an equidigital number, since it uses as much as digits as its factorization.

43697041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 43697041 is about 6610.3737413251. The cubic root of 43697041 is about 352.2227009510. Note that the first 3 decimals are identical.

The spelling of 43697041 in words is "forty-three million, six hundred ninety-seven thousand, forty-one".