43420799 has 2 divisors, whose sum is σ = 43420800. Its totient is φ = 43420798.

The previous prime is 43420781. The next prime is 43420813. The reversal of 43420799 is 99702434.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 43420799 - 2⁸ = 43420543 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43420199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21710399 + 21710400.

It is an arithmetic number, because the mean of its divisors is an integer number (21710400).

Almost surely, 2^43420799 is an apocalyptic number.

43420799 is a deficient number, since it is larger than the sum of its proper divisors (1).

43420799 is an equidigital number, since it uses as much as digits as its factorization.

43420799 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 43420799 is about 6589.4460313444. The cubic root of 43420799 is about 351.4789094788.

The spelling of 43420799 in words is "forty-three million, four hundred twenty thousand, seven hundred ninety-nine".