43434427 has 2 divisors, whose sum is σ = 43434428. Its totient is φ = 43434426.

The previous prime is 43434421. The next prime is 43434449. The reversal of 43434427 is 72443434.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43434427 - 2⁷ = 43434299 is a prime.

It is not a weakly prime, because it can be changed into another prime (43434421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21717213 + 21717214.

It is an arithmetic number, because the mean of its divisors is an integer number (21717214).

Almost surely, 2^43434427 is an apocalyptic number.

43434427 is a deficient number, since it is larger than the sum of its proper divisors (1).

43434427 is an equidigital number, since it uses as much as digits as its factorization.

43434427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 31.

The square root of 43434427 is about 6590.4800280404. The cubic root of 43434427 is about 351.5156772157.

The spelling of 43434427 in words is "forty-three million, four hundred thirty-four thousand, four hundred twenty-seven".