43421627 has 2 divisors, whose sum is σ = 43421628. Its totient is φ = 43421626.

The previous prime is 43421603. The next prime is 43421629. The reversal of 43421627 is 72612434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43421627 - 2¹⁸ = 43159483 is a prime.

Together with 43421629, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43421627.

It is not a weakly prime, because it can be changed into another prime (43421629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710813 + 21710814.

It is an arithmetic number, because the mean of its divisors is an integer number (21710814).

Almost surely, 2^43421627 is an apocalyptic number.

43421627 is a deficient number, since it is larger than the sum of its proper divisors (1).

43421627 is an equidigital number, since it uses as much as digits as its factorization.

43421627 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8064, while the sum is 29.

The square root of 43421627 is about 6589.5088587845. The cubic root of 43421627 is about 351.4811436054.

The spelling of 43421627 in words is "forty-three million, four hundred twenty-one thousand, six hundred twenty-seven".